13431261266722 has 12 divisors (see below), whose sum is σ = 21815865194130. Its totient is φ = 6199043661408.

The previous prime is 13431261266713. The next prime is 13431261266821. The reversal of 13431261266722 is 22766216213431.

It can be written as a sum of positive squares in 3 ways, for example, as 5603962518361 + 7827298748361 = 2367269^2 + 2797731^2 .

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, 19868729347 + ... + 19868730022.

Almost surely, 2^{13431261266722} is an apocalyptic number.

13431261266722 is a deficient number, since it is larger than the sum of its proper divisors (8384603927408).

13431261266722 is a wasteful number, since it uses less digits than its factorization.

13431261266722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39737459397 (or 39737459384 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The spelling of 13431261266722 in words is "thirteen trillion, four hundred thirty-one billion, two hundred sixty-one million, two hundred sixty-six thousand, seven hundred twenty-two".