166617601711 has 8 divisors (see below), whose sum is σ = 181777924944. Its totient is φ = 151459489920.

The previous prime is 166617601693. The next prime is 166617601727. The reversal of 166617601711 is 117106716661.

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 166617601711 - 2¹⁷ = 166617470639 is a prime.

It is a super-2 number, since 2×166617601711² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166617601781) 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 7 ways as a sum of consecutive naturals, for example, 393316 + ... + 698521.

It is an arithmetic number, because the mean of its divisors is an integer number (22722240618).

Almost surely, 2^166617601711 is an apocalyptic number.

166617601711 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166617601711 is a deficient number, since it is larger than the sum of its proper divisors (15160323233).

166617601711 is a wasteful number, since it uses less digits than its factorization.

166617601711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105721.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 166617601711 in words is "one hundred sixty-six billion, six hundred seventeen million, six hundred one thousand, seven hundred eleven".