15664564008 has 48 divisors (see below), whose sum is σ = 42495804000. Its totient is φ = 5212789920.

The previous prime is 15664564007. The next prime is 15664564009. The reversal of 15664564008 is 80046546651.

15664564008 is a `hidden beast` number, since 1 + 566 + 45 + 6 + 40 + 0 + 8 = 666.

15664564008 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15664564007) and next prime (15664564009).

It is not an unprimeable number, because it can be changed into a prime (15664564007) 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 11 ways as a sum of consecutive naturals, for example, 138478 + ... + 224733.

It is an arithmetic number, because the mean of its divisors is an integer number (885329250).

Almost surely, 2^15664564008 is an apocalyptic number.

15664564008 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

15664564008 is an abundant number, since it is smaller than the sum of its proper divisors (26831239992).

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

15664564008 is a wasteful number, since it uses less digits than its factorization.

15664564008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363822 (or 363815 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 15664564008 in words is "fifteen billion, six hundred sixty-four million, five hundred sixty-four thousand, eight".