166377412913 has 4 divisors (see below), whose sum is σ = 166378228848. Its totient is φ = 166376596980.

The previous prime is 166377412891. The next prime is 166377412933. The reversal of 166377412913 is 319214773661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 166377412913 - 2⁸ = 166377412657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166377412933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192398 + ... + 608088.

It is an arithmetic number, because the mean of its divisors is an integer number (41594557212).

Almost surely, 2^166377412913 is an apocalyptic number.

It is an amenable number.

166377412913 is a deficient number, since it is larger than the sum of its proper divisors (815935).

166377412913 is an equidigital number, since it uses as much as digits as its factorization.

166377412913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815934.

The product of its digits is 1143072, while the sum is 50.

The spelling of 166377412913 in words is "one hundred sixty-six billion, three hundred seventy-seven million, four hundred twelve thousand, nine hundred thirteen".