13166445600331 has 4 divisors (see below), whose sum is σ = 13167178839072. Its totient is φ = 13165712361592.

The previous prime is 13166445600307. The next prime is 13166445600337. The reversal of 13166445600331 is 13300654466131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13166445600331 - 2³³ = 13157855665739 is a prime.

It is a super-2 number, since 2×13166445600331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13166445600337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366592435 + ... + 366628348.

It is an arithmetic number, because the mean of its divisors is an integer number (3291794709768).

Almost surely, 2^{13166445600331} is an apocalyptic number.

13166445600331 is a deficient number, since it is larger than the sum of its proper divisors (733238741).

13166445600331 is an equidigital number, since it uses as much as digits as its factorization.

13166445600331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733238740.

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 13166445600331 in words is "thirteen trillion, one hundred sixty-six billion, four hundred forty-five million, six hundred thousand, three hundred thirty-one".