20320522530 has 64 divisors (see below), whose sum is σ = 60803232768. Its totient is φ = 4222445760.

The previous prime is 20320522463. The next prime is 20320522589. The reversal of 20320522530 is 3522502302.

It is a self number, because there is not a number n which added to its sum of digits gives 20320522530.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4396072 + ... + 4400691.

It is an arithmetic number, because the mean of its divisors is an integer number (950050512).

Almost surely, 2^20320522530 is an apocalyptic number.

20320522530 is an abundant number, since it is smaller than the sum of its proper divisors (40482710238).

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

20320522530 is a wasteful number, since it uses less digits than its factorization.

20320522530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796791.

The product of its (nonzero) digits is 3600, while the sum is 24.

The spelling of 20320522530 in words is "twenty billion, three hundred twenty million, five hundred twenty-two thousand, five hundred thirty".