161146220633165 has 64 divisors (see below), whose sum is σ = 207186467880960. Its totient is φ = 120122964299520.

The previous prime is 161146220633149. The next prime is 161146220633239. The reversal of 161146220633165 is 561336022641161.

It is not a de Polignac number, because 161146220633165 - 2⁴ = 161146220633149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 158912234 + ... + 159923076.

It is an arithmetic number, because the mean of its divisors is an integer number (3237288560640).

Almost surely, 2^{161146220633165} is an apocalyptic number.

It is an amenable number.

161146220633165 is a deficient number, since it is larger than the sum of its proper divisors (46040247247795).

161146220633165 is a wasteful number, since it uses less digits than its factorization.

161146220633165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011282.

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 161146220633165 in words is "one hundred sixty-one trillion, one hundred forty-six billion, two hundred twenty million, six hundred thirty-three thousand, one hundred sixty-five".