68877667388 has 24 divisors (see below), whose sum is σ = 120679050240. Its totient is φ = 34397970480.

The previous prime is 68877667343. The next prime is 68877667427. The reversal of 68877667388 is 88376677886.

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, 19728323 + ... + 19731813.

It is an arithmetic number, because the mean of its divisors is an integer number (5028293760).

Almost surely, 2^68877667388 is an apocalyptic number.

It is an amenable number.

68877667388 is a deficient number, since it is larger than the sum of its proper divisors (51801382852).

68877667388 is a wasteful number, since it uses less digits than its factorization.

68877667388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937 (or 7935 counting only the distinct ones).

The product of its digits is 910393344, while the sum is 74.

The spelling of 68877667388 in words is "sixty-eight billion, eight hundred seventy-seven million, six hundred sixty-seven thousand, three hundred eighty-eight".