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68260612442880 = 28351113129196289
BaseRepresentation
bin11111000010101001010011…
…00011101000101100000000
322221200122120110001201202210
433201110221203220230000
532421340213241133010
6401102254211342120
720243444416241304
oct1741245143505400
9287618513051683
1068260612442880
111a82818819aa40
1277a5444bb1940
132c11c43083020
1412bdb8d011d04
157d5936369b20
hex3e15298e8b00

68260612442880 has 576 divisors, whose sum is σ = 256321551951360. Its totient is φ = 15263111577600.

The previous prime is 68260612442879. The next prime is 68260612442903. The reversal of 68260612442880 is 8824421606286.

It is a super-2 number, since 2×682606124428802 (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68260612442880.

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 63 ways as a sum of consecutive naturals, for example, 708865776 + ... + 708962064.

It is an arithmetic number, because the mean of its divisors is an integer number (445002694360).

Almost surely, 268260612442880 is an apocalyptic number.

68260612442880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68260612442880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128160775975680).

68260612442880 is an abundant number, since it is smaller than the sum of its proper divisors (188060939508480).

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

68260612442880 is a wasteful number, since it uses less digits than its factorization.

68260612442880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97628 (or 97614 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 57.

The spelling of 68260612442880 in words is "sixty-eight trillion, two hundred sixty billion, six hundred twelve million, four hundred forty-two thousand, eight hundred eighty".