13164430271525 has 12 divisors (see below), whose sum is σ = 17579577655332. Its totient is φ = 9721425431040.

The previous prime is 13164430271521. The next prime is 13164430271561. The reversal of 13164430271525 is 52517203446131.

It is a Cunningham number, because it is equal to 3628282²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 13164430271524 = 1^2 + 3628282^2 .

It is not a de Polignac number, because 13164430271525 - 2² = 13164430271521 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13164430271521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20252969324 + ... + 20252969973.

It is an arithmetic number, because the mean of its divisors is an integer number (1464964804611).

Almost surely, 2^{13164430271525} is an apocalyptic number.

It is an amenable number.

13164430271525 is a deficient number, since it is larger than the sum of its proper divisors (4415147383807).

13164430271525 is a wasteful number, since it uses less digits than its factorization.

13164430271525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40505939320 (or 40505939315 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 13164430271525 in words is "thirteen trillion, one hundred sixty-four billion, four hundred thirty million, two hundred seventy-one thousand, five hundred twenty-five".