68910815232 has 576 divisors, whose sum is σ = 245926044000. Its totient is φ = 18988204032.

The previous prime is 68910815227. The next prime is 68910815249. The reversal of 68910815232 is 23251801986.

It is a tau number, because it is divible by the number of its divisors (576).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78575178 + ... + 78576054.

Almost surely, 2^68910815232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68910815232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122963022000).

68910815232 is an abundant number, since it is smaller than the sum of its proper divisors (177015228768).

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

68910815232 is a wasteful number, since it uses less digits than its factorization.

68910815232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 68910815232 in words is "sixty-eight billion, nine hundred ten million, eight hundred fifteen thousand, two hundred thirty-two".