64411976736 has 96 divisors (see below), whose sum is σ = 198919385280. Its totient is φ = 20207674368.

The previous prime is 64411976723. The next prime is 64411976747. The reversal of 64411976736 is 63767911446.

64411976736 is a `hidden beast` number, since 6 + 441 + 197 + 6 + 7 + 3 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 2177986 + ... + 2207361.

It is an arithmetic number, because the mean of its divisors is an integer number (2072076930).

Almost surely, 2^64411976736 is an apocalyptic number.

It is an amenable number.

64411976736 is an abundant number, since it is smaller than the sum of its proper divisors (134507408544).

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

64411976736 is a wasteful number, since it uses less digits than its factorization.

64411976736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4385383 (or 4385369 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The spelling of 64411976736 in words is "sixty-four billion, four hundred eleven million, nine hundred seventy-six thousand, seven hundred thirty-six".