19886600670 has 16 divisors (see below), whose sum is σ = 47727841680. Its totient is φ = 5303093504.

The previous prime is 19886600623. The next prime is 19886600687. The reversal of 19886600670 is 7600668891.

It is a happy number.

It is a congruent number.

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, 331443315 + ... + 331443374.

It is an arithmetic number, because the mean of its divisors is an integer number (2982990105).

Almost surely, 2^19886600670 is an apocalyptic number.

19886600670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19886600670 is an abundant number, since it is smaller than the sum of its proper divisors (27841241010).

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

19886600670 is a wasteful number, since it uses less digits than its factorization.

19886600670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662886699.

The product of its (nonzero) digits is 870912, while the sum is 51.

The spelling of 19886600670 in words is "nineteen billion, eight hundred eighty-six million, six hundred thousand, six hundred seventy".