20349642888 has 96 divisors (see below), whose sum is σ = 55563768000. Its totient is φ = 6728033664.

The previous prime is 20349642847. The next prime is 20349642959. The reversal of 20349642888 is 88824694302.

20349642888 is a `hidden beast` number, since 20 + 34 + 96 + 428 + 88 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4969770 + ... + 4973862.

It is an arithmetic number, because the mean of its divisors is an integer number (578789250).

Almost surely, 2^20349642888 is an apocalyptic number.

It is an amenable number.

20349642888 is an abundant number, since it is smaller than the sum of its proper divisors (35214125112).

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

20349642888 is a wasteful number, since it uses less digits than its factorization.

20349642888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4651 (or 4644 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 54.

The spelling of 20349642888 in words is "twenty billion, three hundred forty-nine million, six hundred forty-two thousand, eight hundred eighty-eight".