13315412644 has 24 divisors (see below), whose sum is σ = 23885664768. Its totient is φ = 6491983680.

The previous prime is 13315412587. The next prime is 13315412657. The reversal of 13315412644 is 44621451331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79729 + ... + 181624.

It is an arithmetic number, because the mean of its divisors is an integer number (995236032).

Almost surely, 2^13315412644 is an apocalyptic number.

It is an amenable number.

13315412644 is a deficient number, since it is larger than the sum of its proper divisors (10570252124).

13315412644 is a wasteful number, since it uses less digits than its factorization.

13315412644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261675 (or 261673 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

Adding to 13315412644 its reverse (44621451331), we get a palindrome (57936863975).

The spelling of 13315412644 in words is "thirteen billion, three hundred fifteen million, four hundred twelve thousand, six hundred forty-four".