21364757353736 has 16 divisors (see below), whose sum is σ = 40083008409600. Its totient is φ = 10675955111184.

The previous prime is 21364757353729. The next prime is 21364757353777. The reversal of 21364757353736 is 63735375746312.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 802931576 + ... + 802958183.

It is an arithmetic number, because the mean of its divisors is an integer number (2505188025600).

Almost surely, 2^{21364757353736} is an apocalyptic number.

It is an amenable number.

21364757353736 is a deficient number, since it is larger than the sum of its proper divisors (18718251055864).

21364757353736 is a wasteful number, since it uses less digits than its factorization.

21364757353736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605891428 (or 1605891424 counting only the distinct ones).

The product of its digits is 200037600, while the sum is 62.

The spelling of 21364757353736 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred fifty-seven million, three hundred fifty-three thousand, seven hundred thirty-six".