64374339236 has 12 divisors (see below), whose sum is σ = 112938862428. Its totient is φ = 32106092832.

The previous prime is 64374339233. The next prime is 64374339301. The reversal of 64374339236 is 63293347346.

It can be written as a sum of positive squares in 2 ways, for example, as 52198540900 + 12175798336 = 228470^2 + 110344^2 .

It is not an unprimeable number, because it can be changed into a prime (64374339233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20267411 + ... + 20270586.

It is an arithmetic number, because the mean of its divisors is an integer number (9411571869).

Almost surely, 2^64374339236 is an apocalyptic number.

It is an amenable number.

64374339236 is a deficient number, since it is larger than the sum of its proper divisors (48564523192).

64374339236 is a wasteful number, since it uses less digits than its factorization.

64374339236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40538398 (or 40538396 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 50.

The spelling of 64374339236 in words is "sixty-four billion, three hundred seventy-four million, three hundred thirty-nine thousand, two hundred thirty-six".