20500553562 has 16 divisors (see below), whose sum is σ = 41520109440. Its totient is φ = 6747017472.

The previous prime is 20500553551. The next prime is 20500553581. The reversal of 20500553562 is 26535500502.

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, 21624583 + ... + 21625530.

It is an arithmetic number, because the mean of its divisors is an integer number (2595006840).

Almost surely, 2^20500553562 is an apocalyptic number.

20500553562 is an abundant number, since it is smaller than the sum of its proper divisors (21019555878).

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

20500553562 is a wasteful number, since it uses less digits than its factorization.

20500553562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43250197.

The product of its (nonzero) digits is 45000, while the sum is 33.

The spelling of 20500553562 in words is "twenty billion, five hundred million, five hundred fifty-three thousand, five hundred sixty-two".