13257764555 has 16 divisors (see below), whose sum is σ = 18809046720. Its totient is φ = 8777553792.

The previous prime is 13257764543. The next prime is 13257764563. The reversal of 13257764555 is 55546775231.

It is not a de Polignac number, because 13257764555 - 2²⁸ = 12989329099 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6529904 + ... + 6531933.

It is an arithmetic number, because the mean of its divisors is an integer number (1175565420).

Almost surely, 2^13257764555 is an apocalyptic number.

13257764555 is a deficient number, since it is larger than the sum of its proper divisors (5551282165).

13257764555 is a wasteful number, since it uses less digits than its factorization.

13257764555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13061878.

The product of its digits is 4410000, while the sum is 50.

It can be divided in two parts, 1325776 and 4555, that added together give a palindrome (1330331).

The spelling of 13257764555 in words is "thirteen billion, two hundred fifty-seven million, seven hundred sixty-four thousand, five hundred fifty-five".