64531359392 has 48 divisors (see below), whose sum is σ = 127734063912. Its totient is φ = 32091279360.

The previous prime is 64531359391. The next prime is 64531359413. The reversal of 64531359392 is 29395313546.

It can be written as a sum of positive squares in 4 ways, for example, as 62602041616 + 1929317776 = 250204^2 + 43924^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64531359392.

It is not an unprimeable number, because it can be changed into a prime (64531359391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7429292 + ... + 7437972.

Almost surely, 2^64531359392 is an apocalyptic number.

It is an amenable number.

64531359392 is a deficient number, since it is larger than the sum of its proper divisors (63202704520).

64531359392 is a wasteful number, since it uses less digits than its factorization.

64531359392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9921 (or 9913 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 50.

The spelling of 64531359392 in words is "sixty-four billion, five hundred thirty-one million, three hundred fifty-nine thousand, three hundred ninety-two".