20556753250 has 64 divisors (see below), whose sum is σ = 42170139648. Its totient is φ = 7441440000.

The previous prime is 20556753241. The next prime is 20556753251. The reversal of 20556753250 is 5235765502.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20556753251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596490 + ... + 630010.

It is an arithmetic number, because the mean of its divisors is an integer number (658908432).

Almost surely, 2^20556753250 is an apocalyptic number.

20556753250 is an abundant number, since it is smaller than the sum of its proper divisors (21613386398).

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

20556753250 is a wasteful number, since it uses less digits than its factorization.

20556753250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33772 (or 33762 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 40.

The spelling of 20556753250 in words is "twenty billion, five hundred fifty-six million, seven hundred fifty-three thousand, two hundred fifty".