21542433522 has 16 divisors (see below), whose sum is σ = 43142863680. Its totient is φ = 7171145072.

The previous prime is 21542433499. The next prime is 21542433533. The reversal of 21542433522 is 22533424512.

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, 2411697 + ... + 2420612.

It is an arithmetic number, because the mean of its divisors is an integer number (2696428980).

Almost surely, 2^21542433522 is an apocalyptic number.

21542433522 is an abundant number, since it is smaller than the sum of its proper divisors (21600430158).

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

21542433522 is a wasteful number, since it uses less digits than its factorization.

21542433522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4833057.

The product of its digits is 57600, while the sum is 33.

The spelling of 21542433522 in words is "twenty-one billion, five hundred forty-two million, four hundred thirty-three thousand, five hundred twenty-two".