13564197455 has 4 divisors (see below), whose sum is σ = 16277036952. Its totient is φ = 10851357960.

The previous prime is 13564197443. The next prime is 13564197461. The reversal of 13564197455 is 55479146531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55479146531 = 47 ⋅1180407373.

It is not a de Polignac number, because 13564197455 - 2¹⁸ = 13563935311 is a prime.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1356419741 + ... + 1356419750.

It is an arithmetic number, because the mean of its divisors is an integer number (4069259238).

Almost surely, 2^13564197455 is an apocalyptic number.

13564197455 is a deficient number, since it is larger than the sum of its proper divisors (2712839497).

13564197455 is an equidigital number, since it uses as much as digits as its factorization.

13564197455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2712839496.

The product of its digits is 2268000, while the sum is 50.

The spelling of 13564197455 in words is "thirteen billion, five hundred sixty-four million, one hundred ninety-seven thousand, four hundred fifty-five".