78653377976 has 64 divisors (see below), whose sum is σ = 150967385280. Its totient is φ = 38407183360.

The previous prime is 78653377961. The next prime is 78653377991. The reversal of 78653377976 is 67977335687.

It is an interprime number because it is at equal distance from previous prime (78653377961) and next prime (78653377991).

It is a congruent number.

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, 52680686 + ... + 52682178.

It is an arithmetic number, because the mean of its divisors is an integer number (2358865395).

Almost surely, 2^78653377976 is an apocalyptic number.

It is an amenable number.

78653377976 is a deficient number, since it is larger than the sum of its proper divisors (72314007304).

78653377976 is a wasteful number, since it uses less digits than its factorization.

78653377976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2380 counting only the distinct ones).

The product of its digits is 280052640, while the sum is 68.

The spelling of 78653377976 in words is "seventy-eight billion, six hundred fifty-three million, three hundred seventy-seven thousand, nine hundred seventy-six".