20542520532 has 24 divisors (see below), whose sum is σ = 47943465472. Its totient is φ = 6845947200.

The previous prime is 20542520483. The next prime is 20542520563. The reversal of 20542520532 is 23502524502.

It is a self number, because there is not a number n which added to its sum of digits gives 20542520532.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139444 + ... + 246027.

Almost surely, 2^20542520532 is an apocalyptic number.

It is an amenable number.

20542520532 is an abundant number, since it is smaller than the sum of its proper divisors (27400944940).

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

20542520532 is a wasteful number, since it uses less digits than its factorization.

20542520532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389919 (or 389917 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 30.

The spelling of 20542520532 in words is "twenty billion, five hundred forty-two million, five hundred twenty thousand, five hundred thirty-two".