77677464426 has 32 divisors (see below), whose sum is σ = 162123223680. Its totient is φ = 24764629824.

The previous prime is 77677464391. The next prime is 77677464439. The reversal of 77677464426 is 62446477677.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 77677464426.

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, 2952940 + ... + 2979128.

It is an arithmetic number, because the mean of its divisors is an integer number (5066350740).

Almost surely, 2^77677464426 is an apocalyptic number.

77677464426 is an abundant number, since it is smaller than the sum of its proper divisors (84445759254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77677464426 is a wasteful number, since it uses less digits than its factorization.

77677464426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47710.

The product of its digits is 66382848, while the sum is 60.

The spelling of 77677464426 in words is "seventy-seven billion, six hundred seventy-seven million, four hundred sixty-four thousand, four hundred twenty-six".