21364724577736 has 64 divisors (see below), whose sum is σ = 40411349717760. Its totient is φ = 10588608576000.

The previous prime is 21364724577733. The next prime is 21364724577773. The reversal of 21364724577736 is 63777542746312.

It is not an unprimeable number, because it can be changed into a prime (21364724577733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3056029201 + ... + 3056036191.

It is an arithmetic number, because the mean of its divisors is an integer number (631427339340).

Almost surely, 2^{21364724577736} is an apocalyptic number.

It is an amenable number.

21364724577736 is a deficient number, since it is larger than the sum of its proper divisors (19046625140024).

21364724577736 is a wasteful number, since it uses less digits than its factorization.

21364724577736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10886 (or 10882 counting only the distinct ones).

The product of its digits is 248935680, while the sum is 64.

The spelling of 21364724577736 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred twenty-four million, five hundred seventy-seven thousand, seven hundred thirty-six".