161923392352 has 24 divisors (see below), whose sum is σ = 335564926200. Its totient is φ = 76700553984.

The previous prime is 161923392349. The next prime is 161923392437. The reversal of 161923392352 is 253293329161.

It is a super-5 number, since 5×161923392352⁵ (a number of 57 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133160077 + ... + 133161292.

It is an arithmetic number, because the mean of its divisors is an integer number (13981871925).

Almost surely, 2^161923392352 is an apocalyptic number.

It is an amenable number.

161923392352 is an abundant number, since it is smaller than the sum of its proper divisors (173641533848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161923392352 is a wasteful number, since it uses less digits than its factorization.

161923392352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266321398 (or 266321390 counting only the distinct ones).

The product of its digits is 524880, while the sum is 46.

The spelling of 161923392352 in words is "one hundred sixty-one billion, nine hundred twenty-three million, three hundred ninety-two thousand, three hundred fifty-two".