16645764232 has 16 divisors (see below), whose sum is σ = 31409605260. Its totient is φ = 8269869504.

The previous prime is 16645764167. The next prime is 16645764269. The reversal of 16645764232 is 23246754661.

It can be written as a sum of positive squares in 2 ways, for example, as 13325008356 + 3320755876 = 115434^2 + 57626^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6625243 + ... + 6627754.

Almost surely, 2^16645764232 is an apocalyptic number.

It is an amenable number.

16645764232 is a deficient number, since it is larger than the sum of its proper divisors (14763841028).

16645764232 is a wasteful number, since it uses less digits than its factorization.

16645764232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13253160 (or 13253156 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 46.

The spelling of 16645764232 in words is "sixteen billion, six hundred forty-five million, seven hundred sixty-four thousand, two hundred thirty-two".