13152631465 has 4 divisors (see below), whose sum is σ = 15783157764. Its totient is φ = 10522105168.

The previous prime is 13152631447. The next prime is 13152631469. The reversal of 13152631465 is 56413625131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56413625131 = 1409 ⋅40038059.

It can be written as a sum of positive squares in 2 ways, for example, as 8710675561 + 4441955904 = 93331^2 + 66648^2 .

It is a cyclic number.

It is not a de Polignac number, because 13152631465 - 2²³ = 13144242857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13152631469) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315263142 + ... + 1315263151.

It is an arithmetic number, because the mean of its divisors is an integer number (3945789441).

Almost surely, 2^13152631465 is an apocalyptic number.

It is an amenable number.

13152631465 is a deficient number, since it is larger than the sum of its proper divisors (2630526299).

13152631465 is an equidigital number, since it uses as much as digits as its factorization.

13152631465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630526298.

The product of its digits is 64800, while the sum is 37.

The spelling of 13152631465 in words is "thirteen billion, one hundred fifty-two million, six hundred thirty-one thousand, four hundred sixty-five".