20572442562 has 64 divisors (see below), whose sum is σ = 47379492864. Its totient is φ = 5833339200.

The previous prime is 20572442497. The next prime is 20572442581. The reversal of 20572442562 is 26524427502.

It is a self number, because there is not a number n which added to its sum of digits gives 20572442562.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8063187 + ... + 8065737.

It is an arithmetic number, because the mean of its divisors is an integer number (740304576).

Almost surely, 2^20572442562 is an apocalyptic number.

20572442562 is an abundant number, since it is smaller than the sum of its proper divisors (26807050302).

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

20572442562 is a wasteful number, since it uses less digits than its factorization.

20572442562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3943.

The product of its (nonzero) digits is 268800, while the sum is 39.

The spelling of 20572442562 in words is "twenty billion, five hundred seventy-two million, four hundred forty-two thousand, five hundred sixty-two".