21160324616612 has 24 divisors (see below), whose sum is σ = 37058090760600. Its totient is φ = 10572301578240.

The previous prime is 21160324616593. The next prime is 21160324616617. The reversal of 21160324616612 is 21661642306112.

It can be written as a sum of positive squares in 4 ways, for example, as 5512239969856 + 15648084646756 = 2347816^2 + 3955766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21160324616612.

It is not an unprimeable number, because it can be changed into a prime (21160324616617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29118812 + ... + 29836652.

It is an arithmetic number, because the mean of its divisors is an integer number (1544087115025).

Almost surely, 2^{21160324616612} is an apocalyptic number.

It is an amenable number.

21160324616612 is a deficient number, since it is larger than the sum of its proper divisors (15897766143988).

21160324616612 is a wasteful number, since it uses less digits than its factorization.

21160324616612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723311 (or 723309 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 21160324616612 in words is "twenty-one trillion, one hundred sixty billion, three hundred twenty-four million, six hundred sixteen thousand, six hundred twelve".