77144911464 has 32 divisors (see below), whose sum is σ = 193111823520. Its totient is φ = 25681697856.

The previous prime is 77144911453. The next prime is 77144911483. The reversal of 77144911464 is 46411944177.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060602 + ... + 2097705.

It is an arithmetic number, because the mean of its divisors is an integer number (6034744485).

Almost surely, 2^77144911464 is an apocalyptic number.

It is an amenable number.

77144911464 is an abundant number, since it is smaller than the sum of its proper divisors (115966912056).

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

77144911464 is a wasteful number, since it uses less digits than its factorization.

77144911464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159089 (or 4159085 counting only the distinct ones).

The product of its digits is 677376, while the sum is 48.

The spelling of 77144911464 in words is "seventy-seven billion, one hundred forty-four million, nine hundred eleven thousand, four hundred sixty-four".