78865876966 has 16 divisors (see below), whose sum is σ = 122297901264. Its totient is φ = 38118818304.

The previous prime is 78865876883. The next prime is 78865877033. The reversal of 78865876966 is 66967856887.

It is a junction number, because it is equal to n+sod(n) for n = 78865876892 and 78865876901.

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, 4718695 + ... + 4735378.

It is an arithmetic number, because the mean of its divisors is an integer number (7643618829).

Almost surely, 2^78865876966 is an apocalyptic number.

78865876966 is a deficient number, since it is larger than the sum of its proper divisors (43432024298).

78865876966 is a wasteful number, since it uses less digits than its factorization.

78865876966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9454215.

The product of its digits is 1463132160, while the sum is 76.

The spelling of 78865876966 in words is "seventy-eight billion, eight hundred sixty-five million, eight hundred seventy-six thousand, nine hundred sixty-six".