165564107432 has 16 divisors (see below), whose sum is σ = 310470349140. Its totient is φ = 82772014336.

The previous prime is 165564107417. The next prime is 165564107441. The reversal of 165564107432 is 234701465561.

It can be written as a sum of positive squares in 2 ways, for example, as 157969682116 + 7594425316 = 397454^2 + 87146^2 .

It is a super-2 number, since 2×165564107432² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1184603 + ... + 1316970.

Almost surely, 2^165564107432 is an apocalyptic number.

It is an amenable number.

165564107432 is a deficient number, since it is larger than the sum of its proper divisors (144906241708).

165564107432 is a wasteful number, since it uses less digits than its factorization.

165564107432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509852 (or 2509848 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 165564107432 in words is "one hundred sixty-five billion, five hundred sixty-four million, one hundred seven thousand, four hundred thirty-two".