165229634972224 has 21 divisors (see below), whose sum is σ = 327877760958051. Its totient is φ = 82614766069440.

The previous prime is 165229634972113. The next prime is 165229634972239. The reversal of 165229634972224 is 422279436922561.

The square root of 165229634972224 is 12854168.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 102029959 + ... + 103636729.

Almost surely, 2^{165229634972224} is an apocalyptic number.

165229634972224 is the 12854168-th square number.

It is an amenable number.

165229634972224 is a deficient number, since it is larger than the sum of its proper divisors (162648125985827).

165229634972224 is an frugal number, since it uses more digits than its factorization.

165229634972224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213554 (or 1606773 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 64.

165229634972224 divided by its sum of digits (64) gives a square (2581713046441 = 1606771²).

The spelling of 165229634972224 in words is "one hundred sixty-five trillion, two hundred twenty-nine billion, six hundred thirty-four million, nine hundred seventy-two thousand, two hundred twenty-four".