13028396165 has 16 divisors (see below), whose sum is σ = 16825106160. Its totient is φ = 9648798720.

The previous prime is 13028396141. The next prime is 13028396177. The reversal of 13028396165 is 56169382031.

It is a Cunningham number, because it is equal to 114142²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 304781764 + 12723614401 = 17458^2 + 112799^2 .

It is not a de Polignac number, because 13028396165 - 2⁸ = 13028395909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1251170 + ... + 1261539.

It is an arithmetic number, because the mean of its divisors is an integer number (1051569135).

Almost surely, 2^13028396165 is an apocalyptic number.

It is an amenable number.

13028396165 is a deficient number, since it is larger than the sum of its proper divisors (3796709995).

13028396165 is a wasteful number, since it uses less digits than its factorization.

13028396165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512792.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 13028396165 in words is "thirteen billion, twenty-eight million, three hundred ninety-six thousand, one hundred sixty-five".