166616652413 has 4 divisors (see below), whose sum is σ = 171991383168. Its totient is φ = 161241921660.

The previous prime is 166616652361. The next prime is 166616652479. The reversal of 166616652413 is 314256616661.

166616652413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 166616652413 - 2²⁰ = 166615603837 is a prime.

It is a super-2 number, since 2×166616652413² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166616652493) by changing a digit.

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, 2687365331 + ... + 2687365392.

It is an arithmetic number, because the mean of its divisors is an integer number (42997845792).

Almost surely, 2^166616652413 is an apocalyptic number.

It is an amenable number.

166616652413 is a deficient number, since it is larger than the sum of its proper divisors (5374730755).

166616652413 is an equidigital number, since it uses as much as digits as its factorization.

166616652413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5374730754.

The product of its digits is 933120, while the sum is 47.

The spelling of 166616652413 in words is "one hundred sixty-six billion, six hundred sixteen million, six hundred fifty-two thousand, four hundred thirteen".