68156348032 has 64 divisors (see below), whose sum is σ = 143579116800. Its totient is φ = 32174438400.

The previous prime is 68156347999. The next prime is 68156348033. The reversal of 68156348032 is 23084365186.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×68156348032² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68156348033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46782 + ... + 372157.

It is an arithmetic number, because the mean of its divisors is an integer number (2243423700).

Almost surely, 2^68156348032 is an apocalyptic number.

68156348032 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

68156348032 is an abundant number, since it is smaller than the sum of its proper divisors (75422768768).

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

68156348032 is a wasteful number, since it uses less digits than its factorization.

68156348032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419025 (or 419013 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 68156348032 in words is "sixty-eight billion, one hundred fifty-six million, three hundred forty-eight thousand, thirty-two".