13056412565 has 16 divisors (see below), whose sum is σ = 17908397568. Its totient is φ = 8951738496.

The previous prime is 13056412559. The next prime is 13056412583. The reversal of 13056412565 is 56521465031.

It is a cyclic number.

It is not a de Polignac number, because 13056412565 - 2⁴ = 13056412549 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 286169 + ... + 328641.

It is an arithmetic number, because the mean of its divisors is an integer number (1119274848).

Almost surely, 2^13056412565 is an apocalyptic number.

It is an amenable number.

13056412565 is a deficient number, since it is larger than the sum of its proper divisors (4851985003).

13056412565 is an equidigital number, since it uses as much as digits as its factorization.

13056412565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51268.

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 13056412565 its reverse (56521465031), we get a palindrome (69577877596).

The spelling of 13056412565 in words is "thirteen billion, fifty-six million, four hundred twelve thousand, five hundred sixty-five".