78616930777 has 16 divisors (see below), whose sum is σ = 98787704832. Its totient is φ = 60777576720.

The previous prime is 78616930759. The next prime is 78616930807. The reversal of 78616930777 is 77703961687.

It is not a de Polignac number, because 78616930777 - 2⁷ = 78616930649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78616930727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4009903 + ... + 4029460.

It is an arithmetic number, because the mean of its divisors is an integer number (6174231552).

Almost surely, 2^78616930777 is an apocalyptic number.

78616930777 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

78616930777 is a deficient number, since it is larger than the sum of its proper divisors (20170774055).

78616930777 is a wasteful number, since it uses less digits than its factorization.

78616930777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8039508.

The product of its (nonzero) digits is 18670176, while the sum is 61.

The spelling of 78616930777 in words is "seventy-eight billion, six hundred sixteen million, nine hundred thirty thousand, seven hundred seventy-seven".