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68342128350 = 23523723095333
BaseRepresentation
bin111111101001100000…
…100001111011011110
320112101212202211111220
4333221200201323132
52104431041101400
651221304554210
74636403335416
oct775140417336
9215355684456
1068342128350
1126a90393611
12112b3782966
1365a1b2b602
143444779646
151b9ecce7a0
hexfe9821ede

68342128350 has 96 divisors (see below), whose sum is σ = 174177289440. Its totient is φ = 17721008640.

The previous prime is 68342128333. The next prime is 68342128357. The reversal of 68342128350 is 5382124386.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68342128357) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12812284 + ... + 12817616.

It is an arithmetic number, because the mean of its divisors is an integer number (1814346765).

Almost surely, 268342128350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68342128350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87088644720).

68342128350 is an abundant number, since it is smaller than the sum of its proper divisors (105835161090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68342128350 is a wasteful number, since it uses less digits than its factorization.

68342128350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7694 (or 7689 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 68342128350 in words is "sixty-eight billion, three hundred forty-two million, one hundred twenty-eight thousand, three hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 37 50 74 75 111 150 185 222 370 555 925 1110 1850 2309 2775 4618 5333 5550 6927 10666 11545 13854 15999 23090 26665 31998 34635 53330 57725 69270 79995 85433 115450 133325 159990 170866 173175 197321 256299 266650 346350 394642 399975 427165 512598 591963 799950 854330 986605 1183926 1281495 1973210 2135825 2562990 2959815 4271650 4933025 5919630 6407475 9866050 12313897 12814950 14799075 24627794 29598150 36941691 61569485 73883382 123138970 184708455 307847425 369416910 455614189 615694850 911228378 923542275 1366842567 1847084550 2278070945 2733685134 4556141890 6834212835 11390354725 13668425670 22780709450 34171064175 68342128350