64272774732 has 24 divisors (see below), whose sum is σ = 153627609072. Its totient is φ = 20901715200.

The previous prime is 64272774719. The next prime is 64272774751. The reversal of 64272774732 is 23747727246.

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, 65317369 + ... + 65318352.

It is an arithmetic number, because the mean of its divisors is an integer number (6401150378).

Almost surely, 2^64272774732 is an apocalyptic number.

It is an amenable number.

64272774732 is an abundant number, since it is smaller than the sum of its proper divisors (89354834340).

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

64272774732 is a wasteful number, since it uses less digits than its factorization.

64272774732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130635769 (or 130635767 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 51.

The spelling of 64272774732 in words is "sixty-four billion, two hundred seventy-two million, seven hundred seventy-four thousand, seven hundred thirty-two".