13261102516 has 18 divisors (see below), whose sum is σ = 24492634530. Its totient is φ = 6281574192.

The previous prime is 13261102507. The next prime is 13261102529. The reversal of 13261102516 is 61520116231.

It can be written as a sum of positive squares in only one way, i.e., 11240240400 + 2020862116 = 106020^2 + 44954^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4590351 + ... + 4593238.

Almost surely, 2^13261102516 is an apocalyptic number.

It is an amenable number.

13261102516 is a deficient number, since it is larger than the sum of its proper divisors (11231532014).

13261102516 is a wasteful number, since it uses less digits than its factorization.

13261102516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9183631 (or 9183610 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

Adding to 13261102516 its reverse (61520116231), we get a palindrome (74781218747).

The spelling of 13261102516 in words is "thirteen billion, two hundred sixty-one million, one hundred two thousand, five hundred sixteen".