68717969278 has 16 divisors (see below), whose sum is σ = 117806605920. Its totient is φ = 29449465056.

The previous prime is 68717969249. The next prime is 68717969317. The reversal of 68717969278 is 87296971786.

It is a super-4 number, since 4×68717969278⁴ (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385500 + ... + 534832.

It is an arithmetic number, because the mean of its divisors is an integer number (7362912870).

Almost surely, 2^68717969278 is an apocalyptic number.

68717969278 is a deficient number, since it is larger than the sum of its proper divisors (49088636642).

68717969278 is a wasteful number, since it uses less digits than its factorization.

68717969278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182211.

The product of its digits is 128024064, while the sum is 70.

The spelling of 68717969278 in words is "sixty-eight billion, seven hundred seventeen million, nine hundred sixty-nine thousand, two hundred seventy-eight".