19714807128 has 32 divisors (see below), whose sum is σ = 49346521200. Its totient is φ = 6563668608.

The previous prime is 19714807109. The next prime is 19714807157. The reversal of 19714807128 is 82170841791.

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, 475551 + ... + 515342.

Almost surely, 2^19714807128 is an apocalyptic number.

It is an amenable number.

19714807128 is an abundant number, since it is smaller than the sum of its proper divisors (29631714072).

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

19714807128 is a wasteful number, since it uses less digits than its factorization.

19714807128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991731 (or 991727 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 48.

The spelling of 19714807128 in words is "nineteen billion, seven hundred fourteen million, eight hundred seven thousand, one hundred twenty-eight".