165015161660161 has 8 divisors (see below), whose sum is σ = 165372722319104. Its totient is φ = 164657605986720.

The previous prime is 165015161660087. The next prime is 165015161660191. The reversal of 165015161660161 is 161066161510561.

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 165015161660161 - 2³⁷ = 164877722706689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165015161660191) 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, 69350005 + ... + 71689981.

It is an arithmetic number, because the mean of its divisors is an integer number (20671590289888).

Almost surely, 2^{165015161660161} is an apocalyptic number.

It is an amenable number.

165015161660161 is a deficient number, since it is larger than the sum of its proper divisors (357560658943).

165015161660161 is a wasteful number, since it uses less digits than its factorization.

165015161660161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492751.

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 165015161660161 in words is "one hundred sixty-five trillion, fifteen billion, one hundred sixty-one million, six hundred sixty thousand, one hundred sixty-one".