20888159874 has 16 divisors (see below), whose sum is σ = 42795254880. Its totient is φ = 6792897440.

The previous prime is 20888159861. The next prime is 20888159881. The reversal of 20888159874 is 47895188802.

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, 42455364 + ... + 42455855.

It is an arithmetic number, because the mean of its divisors is an integer number (2674703430).

Almost surely, 2^20888159874 is an apocalyptic number.

20888159874 is an abundant number, since it is smaller than the sum of its proper divisors (21907095006).

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

20888159874 is a wasteful number, since it uses less digits than its factorization.

20888159874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84911265.

The product of its (nonzero) digits is 10321920, while the sum is 60.

The spelling of 20888159874 in words is "twenty billion, eight hundred eighty-eight million, one hundred fifty-nine thousand, eight hundred seventy-four".