77245331884 has 24 divisors (see below), whose sum is σ = 163578350880. Its totient is φ = 31157780736.

The previous prime is 77245331861. The next prime is 77245331897. The reversal of 77245331884 is 48813354277.

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, 81139579 + ... + 81140530.

It is an arithmetic number, because the mean of its divisors is an integer number (6815764620).

Almost surely, 2^77245331884 is an apocalyptic number.

It is an amenable number.

77245331884 is an abundant number, since it is smaller than the sum of its proper divisors (86333018996).

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

77245331884 is a wasteful number, since it uses less digits than its factorization.

77245331884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162280137 (or 162280135 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 52.

The spelling of 77245331884 in words is "seventy-seven billion, two hundred forty-five million, three hundred thirty-one thousand, eight hundred eighty-four".