20427875164 has 6 divisors (see below), whose sum is σ = 35748781544. Its totient is φ = 10213937580.

The previous prime is 20427875131. The next prime is 20427875173. The reversal of 20427875164 is 46157872402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2553484392 + ... + 2553484399.

Almost surely, 2^20427875164 is an apocalyptic number.

It is an amenable number.

20427875164 is a deficient number, since it is larger than the sum of its proper divisors (15320906380).

20427875164 is a wasteful number, since it uses less digits than its factorization.

20427875164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106968795 (or 5106968793 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 20427875164 in words is "twenty billion, four hundred twenty-seven million, eight hundred seventy-five thousand, one hundred sixty-four".