13315361265 has 48 divisors (see below), whose sum is σ = 24470950608. Its totient is φ = 6674669568.

The previous prime is 13315361239. The next prime is 13315361321. The reversal of 13315361265 is 56216351331.

13315361265 is a `hidden beast` number, since 1 + 3 + 31 + 5 + 3 + 612 + 6 + 5 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 1235592801 + 12079768464 = 35151^2 + 109908^2 .

It is not a de Polignac number, because 13315361265 - 2¹¹ = 13315359217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 567609 + ... + 590601.

It is an arithmetic number, because the mean of its divisors is an integer number (509811471).

Almost surely, 2^13315361265 is an apocalyptic number.

13315361265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13315361265 is a deficient number, since it is larger than the sum of its proper divisors (11155589343).

13315361265 is a wasteful number, since it uses less digits than its factorization.

13315361265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23778 (or 23775 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The spelling of 13315361265 in words is "thirteen billion, three hundred fifteen million, three hundred sixty-one thousand, two hundred sixty-five".