21312745496316 has 96 divisors (see below), whose sum is σ = 60392852674560. Its totient is φ = 6470662752000.

The previous prime is 21312745496243. The next prime is 21312745496323. The reversal of 21312745496316 is 61369454721312.

21312745496316 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 27 + 4 + 549 + 63 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 187172910 + ... + 187286741.

It is an arithmetic number, because the mean of its divisors is an integer number (629092215360).

Almost surely, 2^{21312745496316} is an apocalyptic number.

It is an amenable number.

21312745496316 is an abundant number, since it is smaller than the sum of its proper divisors (39080107178244).

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

21312745496316 is a wasteful number, since it uses less digits than its factorization.

21312745496316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374459712 (or 374459704 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 21312745496316 in words is "twenty-one trillion, three hundred twelve billion, seven hundred forty-five million, four hundred ninety-six thousand, three hundred sixteen".