20553543522 has 12 divisors (see below), whose sum is σ = 44532677670. Its totient is φ = 6851181168.

The previous prime is 20553543511. The next prime is 20553543547. The reversal of 20553543522 is 22534535502.

20553543522 is a `hidden beast` number, since 2 + 0 + 553 + 54 + 3 + 52 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14582736081 + 5970807441 = 120759^2 + 77271^2 .

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, 570931747 + ... + 570931782.

Almost surely, 2^20553543522 is an apocalyptic number.

20553543522 is an abundant number, since it is smaller than the sum of its proper divisors (23979134148).

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

20553543522 is a wasteful number, since it uses less digits than its factorization.

20553543522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141863537 (or 1141863534 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 36.

The spelling of 20553543522 in words is "twenty billion, five hundred fifty-three million, five hundred forty-three thousand, five hundred twenty-two".