165600156056161 has 8 divisors (see below), whose sum is σ = 169321832797824. Its totient is φ = 161886740529840.

The previous prime is 165600156056123. The next prime is 165600156056243. The reversal of 165600156056161 is 161650651006561.

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 165600156056161 - 2¹⁹ = 165600155531873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165600156053161) 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, 2065263295 + ... + 2065343476.

It is an arithmetic number, because the mean of its divisors is an integer number (21165229099728).

Almost surely, 2^{165600156056161} is an apocalyptic number.

It is an amenable number.

165600156056161 is a deficient number, since it is larger than the sum of its proper divisors (3721676741663).

165600156056161 is an equidigital number, since it uses as much as digits as its factorization.

165600156056161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4130607671.

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 165600156056161 in words is "one hundred sixty-five trillion, six hundred billion, one hundred fifty-six million, fifty-six thousand, one hundred sixty-one".