15664008890 has 16 divisors (see below), whose sum is σ = 28244604960. Its totient is φ = 6254628240.

The previous prime is 15664008889. The next prime is 15664008901. The reversal of 15664008890 is 9880046651.

It is a super-2 number, since 2×15664008890² (a number of 21 digits) contains 22 as substring.

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, 1365920 + ... + 1377339.

It is an arithmetic number, because the mean of its divisors is an integer number (1765287810).

Almost surely, 2^15664008890 is an apocalyptic number.

15664008890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15664008890 is a deficient number, since it is larger than the sum of its proper divisors (12580596070).

15664008890 is a wasteful number, since it uses less digits than its factorization.

15664008890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743837.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 15664008890 in words is "fifteen billion, six hundred sixty-four million, eight thousand, eight hundred ninety".