161770033072 has 40 divisors (see below), whose sum is σ = 321959924496. Its totient is φ = 78684408576.

The previous prime is 161770033043. The next prime is 161770033093. The reversal of 161770033072 is 270330077161.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3632283 + ... + 3676549.

Almost surely, 2^161770033072 is an apocalyptic number.

It is an amenable number.

161770033072 is a deficient number, since it is larger than the sum of its proper divisors (160189891424).

161770033072 is a wasteful number, since it uses less digits than its factorization.

161770033072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50485 (or 50479 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 37.

The spelling of 161770033072 in words is "one hundred sixty-one billion, seven hundred seventy million, thirty-three thousand, seventy-two".