68912939286 has 12 divisors (see below), whose sum is σ = 149311368492. Its totient is φ = 22970979756.

The previous prime is 68912939267. The next prime is 68912939323. The reversal of 68912939286 is 68293921986.

68912939286 is a `hidden beast` number, since 68 + 9 + 1 + 293 + 9 + 286 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1914248296 + ... + 1914248331.

It is an arithmetic number, because the mean of its divisors is an integer number (12442614041).

Almost surely, 2^68912939286 is an apocalyptic number.

68912939286 is an abundant number, since it is smaller than the sum of its proper divisors (80398429206).

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

68912939286 is a wasteful number, since it uses less digits than its factorization.

68912939286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828496635 (or 3828496632 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The spelling of 68912939286 in words is "sixty-eight billion, nine hundred twelve million, nine hundred thirty-nine thousand, two hundred eighty-six".