165615313352 has 24 divisors (see below), whose sum is σ = 329869605810. Its totient is φ = 77936616960.

The previous prime is 165615313351. The next prime is 165615313361. The reversal of 165615313352 is 253313516561.

It can be written as a sum of positive squares in 3 ways, for example, as 164435116036 + 1180197316 = 405506^2 + 34354^2 .

It is a super-2 number, since 2×165615313352² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (165615313351) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 35814149 + ... + 35818772.

Almost surely, 2^165615313352 is an apocalyptic number.

It is an amenable number.

165615313352 is a deficient number, since it is larger than the sum of its proper divisors (164254292458).

165615313352 is a wasteful number, since it uses less digits than its factorization.

165615313352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71632961 (or 71632940 counting only the distinct ones).

The product of its digits is 243000, while the sum is 41.

The spelling of 165615313352 in words is "one hundred sixty-five billion, six hundred fifteen million, three hundred thirteen thousand, three hundred fifty-two".