20744507288065 has 16 divisors (see below), whose sum is σ = 27172336282560. Its totient is φ = 15078086403520.

The previous prime is 20744507288053. The next prime is 20744507288101. The reversal of 20744507288065 is 56088270544702.

It is not a de Polignac number, because 20744507288065 - 2⁷ = 20744507287937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110254999 + ... + 110442988.

It is an arithmetic number, because the mean of its divisors is an integer number (1698271017660).

Almost surely, 2^{20744507288065} is an apocalyptic number.

It is an amenable number.

20744507288065 is a deficient number, since it is larger than the sum of its proper divisors (6427828994495).

20744507288065 is a wasteful number, since it uses less digits than its factorization.

20744507288065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220699712.

The product of its (nonzero) digits is 30105600, while the sum is 58.

The spelling of 20744507288065 in words is "twenty trillion, seven hundred forty-four billion, five hundred seven million, two hundred eighty-eight thousand, sixty-five".