20868160164 has 24 divisors (see below), whose sum is σ = 48757231488. Its totient is φ = 6946788000.

The previous prime is 20868160139. The next prime is 20868160171. The reversal of 20868160164 is 46106186802.

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, 1148787 + ... + 1166810.

It is an arithmetic number, because the mean of its divisors is an integer number (2031551312).

Almost surely, 2^20868160164 is an apocalyptic number.

It is an amenable number.

20868160164 is an abundant number, since it is smaller than the sum of its proper divisors (27889071324).

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

20868160164 is a wasteful number, since it uses less digits than its factorization.

20868160164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316355 (or 2316353 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 20868160164 in words is "twenty billion, eight hundred sixty-eight million, one hundred sixty thousand, one hundred sixty-four".