68536638330 has 32 divisors (see below), whose sum is σ = 168313235904. Its totient is φ = 17851403136.

The previous prime is 68536638319. The next prime is 68536638341. The reversal of 68536638330 is 3383663586.

It is an interprime number because it is at equal distance from previous prime (68536638319) and next prime (68536638341).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26563299 + ... + 26565878.

It is an arithmetic number, because the mean of its divisors is an integer number (5259788622).

Almost surely, 2^68536638330 is an apocalyptic number.

68536638330 is an abundant number, since it is smaller than the sum of its proper divisors (99776597574).

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

68536638330 is a wasteful number, since it uses less digits than its factorization.

68536638330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53129230.

The product of its (nonzero) digits is 5598720, while the sum is 51.

The spelling of 68536638330 in words is "sixty-eight billion, five hundred thirty-six million, six hundred thirty-eight thousand, three hundred thirty".