16165003265 has 8 divisors (see below), whose sum is σ = 20539063080. Its totient is φ = 12171296512.

The previous prime is 16165003259. The next prime is 16165003277. The reversal of 16165003265 is 56230056161.

It can be written as a sum of positive squares in 4 ways, for example, as 2709931249 + 13455072016 = 52057^2 + 115996^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16165003265 - 2⁴ = 16165003249 is a prime.

It is a super-2 number, since 2×16165003265² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95088170 + ... + 95088339.

It is an arithmetic number, because the mean of its divisors is an integer number (2567382885).

Almost surely, 2^16165003265 is an apocalyptic number.

It is an amenable number.

16165003265 is a deficient number, since it is larger than the sum of its proper divisors (4374059815).

16165003265 is a wasteful number, since it uses less digits than its factorization.

16165003265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190176531.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 16165003265 in words is "sixteen billion, one hundred sixty-five million, three thousand, two hundred sixty-five".