20744507288063 has 16 divisors (see below), whose sum is σ = 23351954840256. Its totient is φ = 18284476446720.

The previous prime is 20744507288053. The next prime is 20744507288101. The reversal of 20744507288063 is 36088270544702.

It is a cyclic number.

It is not a de Polignac number, because 20744507288063 - 2²² = 20744503093759 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20744507288053) 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, 59948468 + ... + 60293513.

It is an arithmetic number, because the mean of its divisors is an integer number (1459497177516).

Almost surely, 2^{20744507288063} is an apocalyptic number.

20744507288063 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20744507288063 is a deficient number, since it is larger than the sum of its proper divisors (2607447552193).

20744507288063 is a wasteful number, since it uses less digits than its factorization.

20744507288063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120242594.

The product of its (nonzero) digits is 18063360, while the sum is 56.

The spelling of 20744507288063 in words is "twenty trillion, seven hundred forty-four billion, five hundred seven million, two hundred eighty-eight thousand, sixty-three".