20857263200 has 36 divisors (see below), whose sum is σ = 50917795740. Its totient is φ = 8342904960.

The previous prime is 20857263191. The next prime is 20857263227. The reversal of 20857263200 is 236275802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13034990 + ... + 13036589.

It is an arithmetic number, because the mean of its divisors is an integer number (1414383215).

Almost surely, 2^20857263200 is an apocalyptic number.

20857263200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20857263200 is an abundant number, since it is smaller than the sum of its proper divisors (30060532540).

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

20857263200 is a wasteful number, since it uses less digits than its factorization.

20857263200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26071599 (or 26071586 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 20857263200 in words is "twenty billion, eight hundred fifty-seven million, two hundred sixty-three thousand, two hundred".