165006661166 has 8 divisors (see below), whose sum is σ = 260536833480. Its totient is φ = 78161050008.

The previous prime is 165006661153. The next prime is 165006661187. The reversal of 165006661166 is 661166600561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×165006661166² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2171140241 + ... + 2171140316.

It is an arithmetic number, because the mean of its divisors is an integer number (32567104185).

Almost surely, 2^165006661166 is an apocalyptic number.

165006661166 is a deficient number, since it is larger than the sum of its proper divisors (95530172314).

165006661166 is a wasteful number, since it uses less digits than its factorization.

165006661166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4342280578.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 165006661166 in words is "one hundred sixty-five billion, six million, six hundred sixty-one thousand, one hundred sixty-six".