20615264224 has 24 divisors (see below), whose sum is σ = 40591809720. Its totient is φ = 10306233216.

The previous prime is 20615264179. The next prime is 20615264239. The reversal of 20615264224 is 42246251602.

It is a self number, because there is not a number n which added to its sum of digits gives 20615264224.

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 3 ways as a sum of consecutive naturals, for example, 220282 + ... + 299590.

It is an arithmetic number, because the mean of its divisors is an integer number (1691325405).

Almost surely, 2^20615264224 is an apocalyptic number.

It is an amenable number.

20615264224 is a deficient number, since it is larger than the sum of its proper divisors (19976545496).

20615264224 is an equidigital number, since it uses as much as digits as its factorization.

20615264224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87442 (or 87434 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 20615264224 in words is "twenty billion, six hundred fifteen million, two hundred sixty-four thousand, two hundred twenty-four".