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68049330870 = 23519119384791
BaseRepresentation
bin111111011000000011…
…100110001010110110
320111122110211011212210
4333120003212022312
52103331112041440
651132245154250
74626216524433
oct773003461266
9214573734783
1068049330870
1126950089524
12112316bb986
136556282c71
14341791cb8a
151b84244a80
hexfd80e62b6

68049330870 has 32 divisors (see below), whose sum is σ = 171914100480. Its totient is φ = 17191409760.

The previous prime is 68049330863. The next prime is 68049330883. The reversal of 68049330870 is 7803394086.

It is a super-2 number, since 2×680493308702 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59691826 + ... + 59692965.

It is an arithmetic number, because the mean of its divisors is an integer number (5372315640).

Almost surely, 268049330870 is an apocalyptic number.

68049330870 is an abundant number, since it is smaller than the sum of its proper divisors (103864769610).

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

68049330870 is a wasteful number, since it uses less digits than its factorization.

68049330870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119384820.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 68049330870 in words is "sixty-eight billion, forty-nine million, three hundred thirty thousand, eight hundred seventy".

Divisors: 1 2 3 5 6 10 15 19 30 38 57 95 114 190 285 570 119384791 238769582 358154373 596923955 716308746 1193847910 1790771865 2268311029 3581543730 4536622058 6804933087 11341555145 13609866174 22683110290 34024665435 68049330870