166165214601 has 8 divisors (see below), whose sum is σ = 221931055584. Its totient is φ = 110588091680.

The previous prime is 166165214597. The next prime is 166165214671. The reversal of 166165214601 is 106412561661.

It is a happy number.

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 166165214601 - 2² = 166165214597 is a prime.

It is a super-2 number, since 2×166165214601² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 166165214601.

It is not an unprimeable number, because it can be changed into a prime (166165214671) 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, 47177460 + ... + 47180981.

It is an arithmetic number, because the mean of its divisors is an integer number (27741381948).

Almost surely, 2^166165214601 is an apocalyptic number.

It is an amenable number.

166165214601 is a deficient number, since it is larger than the sum of its proper divisors (55765840983).

166165214601 is an equidigital number, since it uses as much as digits as its factorization.

166165214601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94359031.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 166165214601 in words is "one hundred sixty-six billion, one hundred sixty-five million, two hundred fourteen thousand, six hundred one".