77196464576 has 56 divisors (see below), whose sum is σ = 190986070656. Its totient is φ = 30076542720.

The previous prime is 77196464573. The next prime is 77196464591. The reversal of 77196464576 is 67546469177.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77196464573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7827506 + ... + 7837361.

Almost surely, 2^77196464576 is an apocalyptic number.

It is an amenable number.

77196464576 is an abundant number, since it is smaller than the sum of its proper divisors (113789606080).

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

77196464576 is a wasteful number, since it uses less digits than its factorization.

77196464576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15664897 (or 15664887 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 62.

The spelling of 77196464576 in words is "seventy-seven billion, one hundred ninety-six million, four hundred sixty-four thousand, five hundred seventy-six".