13162878445625 has 40 divisors (see below), whose sum is σ = 16658355776040. Its totient is φ = 10396203840000.

The previous prime is 13162878445609. The next prime is 13162878445643. The reversal of 13162878445625 is 52654487826131.

It can be written as a sum of positive squares in 20 ways, for example, as 12941955885049 + 220922560576 = 3597493^2 + 470024^2 .

It is not a de Polignac number, because 13162878445625 - 2⁴ = 13162878445609 is a prime.

It is a super-2 number, since 2×13162878445625² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 36589127 + ... + 36947123.

It is an arithmetic number, because the mean of its divisors is an integer number (416458894401).

Almost surely, 2^{13162878445625} is an apocalyptic number.

It is an amenable number.

13162878445625 is a deficient number, since it is larger than the sum of its proper divisors (3495477330415).

13162878445625 is an frugal number, since it uses more digits than its factorization.

13162878445625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358767 (or 358752 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 62.

The spelling of 13162878445625 in words is "thirteen trillion, one hundred sixty-two billion, eight hundred seventy-eight million, four hundred forty-five thousand, six hundred twenty-five".