165449730464 has 48 divisors (see below), whose sum is σ = 327362643720. Its totient is φ = 82310922240.

The previous prime is 165449730437. The next prime is 165449730499. The reversal of 165449730464 is 464037944561.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 165177216400 + 272514064 = 406420^2 + 16508^2 .

It is a super-2 number, since 2×165449730464² (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 7 ways as a sum of consecutive naturals, for example, 5996252 + ... + 6023780.

Almost surely, 2^165449730464 is an apocalyptic number.

It is an amenable number.

165449730464 is a deficient number, since it is larger than the sum of its proper divisors (161912913256).

165449730464 is a wasteful number, since it uses less digits than its factorization.

165449730464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28473 (or 28465 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 165449730464 in words is "one hundred sixty-five billion, four hundred forty-nine million, seven hundred thirty thousand, four hundred sixty-four".