77613031676 has 12 divisors (see below), whose sum is σ = 142971374280. Its totient is φ = 36764067600.

The previous prime is 77613031669. The next prime is 77613031687. The reversal of 77613031676 is 67613031677.

It is a self number, because there is not a number n which added to its sum of digits gives 77613031676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510611975 + ... + 510612126.

It is an arithmetic number, because the mean of its divisors is an integer number (11914281190).

Almost surely, 2^77613031676 is an apocalyptic number.

77613031676 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

77613031676 is a deficient number, since it is larger than the sum of its proper divisors (65358342604).

77613031676 is a wasteful number, since it uses less digits than its factorization.

77613031676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021224124 (or 1021224122 counting only the distinct ones).

The product of its (nonzero) digits is 666792, while the sum is 47.

Subtracting from 77613031676 its reverse (67613031677), we obtain a palindrome (9999999999).

The spelling of 77613031676 in words is "seventy-seven billion, six hundred thirteen million, thirty-one thousand, six hundred seventy-six".