20809270893160 has 16 divisors (see below), whose sum is σ = 46820859509700. Its totient is φ = 8323708357248.

The previous prime is 20809270893139. The next prime is 20809270893209. The reversal of 20809270893160 is 6139807290802.

It can be written as a sum of positive squares in 2 ways, for example, as 18796612276036 + 2012658617124 = 4335506^2 + 1418682^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260115886125 + ... + 260115886204.

Almost surely, 2^{20809270893160} is an apocalyptic number.

20809270893160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20809270893160 is an abundant number, since it is smaller than the sum of its proper divisors (26011588616540).

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

20809270893160 is a wasteful number, since it uses less digits than its factorization.

20809270893160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520231772340 (or 520231772336 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 20809270893160 in words is "twenty trillion, eight hundred nine billion, two hundred seventy million, eight hundred ninety-three thousand, one hundred sixty".