20560944615 has 16 divisors (see below), whose sum is σ = 32943283200. Its totient is φ = 10950579872.

The previous prime is 20560944557. The next prime is 20560944617. The reversal of 20560944615 is 51644906502.

It is a cyclic number.

It is not a de Polignac number, because 20560944615 - 2⁸ = 20560944359 is a prime.

It is a super-2 number, since 2×20560944615² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20560944617) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 942435 + ... + 964004.

It is an arithmetic number, because the mean of its divisors is an integer number (2058955200).

Almost surely, 2^20560944615 is an apocalyptic number.

20560944615 is a deficient number, since it is larger than the sum of its proper divisors (12382338585).

20560944615 is a wasteful number, since it uses less digits than its factorization.

20560944615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907166.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 20560944615 in words is "twenty billion, five hundred sixty million, nine hundred forty-four thousand, six hundred fifteen".