68634968910 has 32 divisors (see below), whose sum is σ = 164767288320. Its totient is φ = 18297840288.

The previous prime is 68634968879. The next prime is 68634968929. The reversal of 68634968910 is 1986943686.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184530 + ... + 413909.

It is an arithmetic number, because the mean of its divisors is an integer number (5148977760).

Almost surely, 2^68634968910 is an apocalyptic number.

68634968910 is an abundant number, since it is smaller than the sum of its proper divisors (96132319410).

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

68634968910 is a wasteful number, since it uses less digits than its factorization.

68634968910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602272.

The product of its (nonzero) digits is 13436928, while the sum is 60.

The spelling of 68634968910 in words is "sixty-eight billion, six hundred thirty-four million, nine hundred sixty-eight thousand, nine hundred ten".