68880935628864 has 168 divisors, whose sum is σ = 206660693742048. Its totient is φ = 22745728972800.

The previous prime is 68880935628863. The next prime is 68880935628917. The reversal of 68880935628864 is 46882653908886.

It is a happy number.

It is a super-2 number, since 2×68880935628864² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (68880935628863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19032537 + ... + 22360664.

It is an arithmetic number, because the mean of its divisors is an integer number (1230123177036).

Almost surely, 2^{68880935628864} is an apocalyptic number.

68880935628864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

68880935628864 is an abundant number, since it is smaller than the sum of its proper divisors (137779758113184).

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

68880935628864 is a wasteful number, since it uses less digits than its factorization.

68880935628864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41393335 (or 41393313 counting only the distinct ones).

The product of its (nonzero) digits is 7644119040, while the sum is 81.

The spelling of 68880935628864 in words is "sixty-eight trillion, eight hundred eighty billion, nine hundred thirty-five million, six hundred twenty-eight thousand, eight hundred sixty-four".