165864457324 has 12 divisors (see below), whose sum is σ = 290267331984. Its totient is φ = 82930933904.

The previous prime is 165864457309. The next prime is 165864457331. The reversal of 165864457324 is 423754468561.

It is a super-2 number, since 2×165864457324² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657 + ... + 575959.

It is an arithmetic number, because the mean of its divisors is an integer number (24188944332).

Almost surely, 2^165864457324 is an apocalyptic number.

It is an amenable number.

165864457324 is a deficient number, since it is larger than the sum of its proper divisors (124402874660).

165864457324 is a wasteful number, since it uses less digits than its factorization.

165864457324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647384 (or 647382 counting only the distinct ones).

The product of its digits is 19353600, while the sum is 55.

The spelling of 165864457324 in words is "one hundred sixty-five billion, eight hundred sixty-four million, four hundred fifty-seven thousand, three hundred twenty-four".