161523752163 has 16 divisors (see below), whose sum is σ = 216280350720. Its totient is φ = 107225798976.

The previous prime is 161523752129. The next prime is 161523752219. The reversal of 161523752163 is 361257325161.

It is not a de Polignac number, because 161523752163 - 2⁶ = 161523752099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161523750163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 546718 + ... + 788636.

It is an arithmetic number, because the mean of its divisors is an integer number (13517521920).

Almost surely, 2^161523752163 is an apocalyptic number.

161523752163 is a deficient number, since it is larger than the sum of its proper divisors (54756598557).

161523752163 is a wasteful number, since it uses less digits than its factorization.

161523752163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242866.

The product of its digits is 226800, while the sum is 42.

The spelling of 161523752163 in words is "one hundred sixty-one billion, five hundred twenty-three million, seven hundred fifty-two thousand, one hundred sixty-three".