165269311904 has 12 divisors (see below), whose sum is σ = 325373957874. Its totient is φ = 82634655936.

The previous prime is 165269311853. The next prime is 165269311951. The reversal of 165269311904 is 409113962561.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 132167148304 + 33102163600 = 363548^2 + 181940^2 .

It is a super-2 number, since 2×165269311904² (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 as a sum of consecutive naturals, namely, 2582332967 + ... + 2582333030.

Almost surely, 2^165269311904 is an apocalyptic number.

It is an amenable number.

165269311904 is a deficient number, since it is larger than the sum of its proper divisors (160104645970).

165269311904 is an equidigital number, since it uses as much as digits as its factorization.

165269311904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5164666007 (or 5164665999 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 165269311904 in words is "one hundred sixty-five billion, two hundred sixty-nine million, three hundred eleven thousand, nine hundred four".