165504497472 has 84 divisors (see below), whose sum is σ = 474560659716. Its totient is φ = 55148175360.

The previous prime is 165504497471. The next prime is 165504497507. The reversal of 165504497472 is 274794405561.

165504497472 is a `hidden beast` number, since 1 + 6 + 5 + 504 + 4 + 97 + 47 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4305459456 + 161199038016 = 65616^2 + 401496^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165504497471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1583472 + ... + 1684752.

Almost surely, 2^165504497472 is an apocalyptic number.

165504497472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165504497472 is an abundant number, since it is smaller than the sum of its proper divisors (309056162244).

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

165504497472 is a wasteful number, since it uses less digits than its factorization.

165504497472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104136 (or 104123 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

It can be divided in two parts, 165504 and 497472, that added together give a triangular number (662976 = T₁₁₅₁).

The spelling of 165504497472 in words is "one hundred sixty-five billion, five hundred four million, four hundred ninety-seven thousand, four hundred seventy-two".