166813713613 has 8 divisors (see below), whose sum is σ = 176649282432. Its totient is φ = 156980700096.

The previous prime is 166813713593. The next prime is 166813713617. The reversal of 166813713613 is 316317318661.

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 166813713613 - 2⁵ = 166813713581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166813713617) 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, 503595 + ... + 766312.

It is an arithmetic number, because the mean of its divisors is an integer number (22081160304).

Almost surely, 2^166813713613 is an apocalyptic number.

It is an amenable number.

166813713613 is a deficient number, since it is larger than the sum of its proper divisors (9835568819).

166813713613 is a wasteful number, since it uses less digits than its factorization.

166813713613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277651.

The product of its digits is 326592, while the sum is 46.

The spelling of 166813713613 in words is "one hundred sixty-six billion, eight hundred thirteen million, seven hundred thirteen thousand, six hundred thirteen".