161373612 has 48 divisors (see below), whose sum is σ = 413602560. Its totient is φ = 48742848.

The previous prime is 161373599. The next prime is 161373617. The reversal of 161373612 is 216373161.

It is a self number, because there is not a number n which added to its sum of digits gives 161373612.

It is not an unprimeable number, because it can be changed into a prime (161373617) 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, 10143 + ... + 20630.

It is an arithmetic number, because the mean of its divisors is an integer number (8616720).

Almost surely, 2^161373612 is an apocalyptic number.

161373612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161373612 is an abundant number, since it is smaller than the sum of its proper divisors (252228948).

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

161373612 is a wasteful number, since it uses less digits than its factorization.

161373612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30822 (or 30820 counting only the distinct ones).

The product of its digits is 4536, while the sum is 30.

The square root of 161373612 is about 12703.2913845192. The cubic root of 161373612 is about 544.4326638326.

The spelling of 161373612 in words is "one hundred sixty-one million, three hundred seventy-three thousand, six hundred twelve".