13166405665131 has 8 divisors (see below), whose sum is σ = 17983383347664. Its totient is φ = 8563515879680.

The previous prime is 13166405665103. The next prime is 13166405665141. The reversal of 13166405665131 is 13156650466131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13166405665131 - 2⁵ = 13166405665099 is a prime.

It is a super-2 number, since 2×13166405665131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13166405665141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53521974126 + ... + 53521974371.

It is an arithmetic number, because the mean of its divisors is an integer number (2247922918458).

Almost surely, 2^{13166405665131} is an apocalyptic number.

13166405665131 is a deficient number, since it is larger than the sum of its proper divisors (4816977682533).

13166405665131 is a wasteful number, since it uses less digits than its factorization.

13166405665131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107043948541.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The spelling of 13166405665131 in words is "thirteen trillion, one hundred sixty-six billion, four hundred five million, six hundred sixty-five thousand, one hundred thirty-one".