13166232541565 has 64 divisors (see below), whose sum is σ = 17072167875840. Its totient is φ = 9729463080960.

The previous prime is 13166232541559. The next prime is 13166232541571. The reversal of 13166232541565 is 56514523266131.

It is an interprime number because it is at equal distance from previous prime (13166232541559) and next prime (13166232541571).

It is not a de Polignac number, because 13166232541565 - 2¹⁶ = 13166232476029 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 87660662 + ... + 87810728.

It is an arithmetic number, because the mean of its divisors is an integer number (266752623060).

Almost surely, 2^{13166232541565} is an apocalyptic number.

It is an amenable number.

13166232541565 is a deficient number, since it is larger than the sum of its proper divisors (3905935334275).

13166232541565 is a wasteful number, since it uses less digits than its factorization.

13166232541565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150462.

The product of its digits is 3888000, while the sum is 50.

The spelling of 13166232541565 in words is "thirteen trillion, one hundred sixty-six billion, two hundred thirty-two million, five hundred forty-one thousand, five hundred sixty-five".