77917061496 has 64 divisors (see below), whose sum is σ = 201586867200. Its totient is φ = 25067145600.

The previous prime is 77917061447. The next prime is 77917061501. The reversal of 77917061496 is 69416071977.

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, 1922481 + ... + 1962591.

It is an arithmetic number, because the mean of its divisors is an integer number (3149794800).

Almost surely, 2^77917061496 is an apocalyptic number.

It is an amenable number.

77917061496 is an abundant number, since it is smaller than the sum of its proper divisors (123669805704).

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

77917061496 is a wasteful number, since it uses less digits than its factorization.

77917061496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42940 (or 42936 counting only the distinct ones).

The product of its (nonzero) digits is 4000752, while the sum is 57.

The spelling of 77917061496 in words is "seventy-seven billion, nine hundred seventeen million, sixty-one thousand, four hundred ninety-six".