161445113452 has 48 divisors (see below), whose sum is σ = 327121079040. Its totient is φ = 68288968512.

The previous prime is 161445113429. The next prime is 161445113507. The reversal of 161445113452 is 254311544161.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 705763 + ... + 906085.

It is an arithmetic number, because the mean of its divisors is an integer number (6815022480).

Almost surely, 2^161445113452 is an apocalyptic number.

It is an amenable number.

161445113452 is an abundant number, since it is smaller than the sum of its proper divisors (165675965588).

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

161445113452 is a wasteful number, since it uses less digits than its factorization.

161445113452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200710 (or 200708 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The spelling of 161445113452 in words is "one hundred sixty-one billion, four hundred forty-five million, one hundred thirteen thousand, four hundred fifty-two".