13268748962681 has 4 divisors (see below), whose sum is σ = 13268773973364. Its totient is φ = 13268723952000.

The previous prime is 13268748962669. The next prime is 13268748962713. The reversal of 13268748962681 is 18626984786231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7206320122681 + 6062428840000 = 2684459^2 + 2462200^2 .

It is a cyclic number.

It is not a de Polignac number, because 13268748962681 - 2³⁰ = 13267675220857 is a prime.

It is a super-2 number, since 2×13268748962681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13268748982681) 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, 11691920 + ... + 12776481.

It is an arithmetic number, because the mean of its divisors is an integer number (3317193493341).

Almost surely, 2^{13268748962681} is an apocalyptic number.

It is an amenable number.

13268748962681 is a deficient number, since it is larger than the sum of its proper divisors (25010683).

13268748962681 is an equidigital number, since it uses as much as digits as its factorization.

13268748962681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25010682.

The product of its digits is 334430208, while the sum is 71.

The spelling of 13268748962681 in words is "thirteen trillion, two hundred sixty-eight billion, seven hundred forty-eight million, nine hundred sixty-two thousand, six hundred eighty-one".