64777237474880 has 112 divisors (see below), whose sum is σ = 178032037591296. Its totient is φ = 21989444044800.

The previous prime is 64777237474861. The next prime is 64777237474973. The reversal of 64777237474880 is 8847473277746.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 64777237474798 and 64777237474807.

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, 142934204 + ... + 143386683.

It is an arithmetic number, because the mean of its divisors is an integer number (1589571764208).

Almost surely, 2^{64777237474880} is an apocalyptic number.

It is an amenable number.

64777237474880 is an abundant number, since it is smaller than the sum of its proper divisors (113254800116416).

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

64777237474880 is a wasteful number, since it uses less digits than its factorization.

64777237474880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286321012 (or 286321002 counting only the distinct ones).

The product of its (nonzero) digits is 2478292992, while the sum is 74.

The spelling of 64777237474880 in words is "sixty-four trillion, seven hundred seventy-seven billion, two hundred thirty-seven million, four hundred seventy-four thousand, eight hundred eighty".