13396192926561 has 9 divisors (see below), whose sum is σ = 19350072309841. Its totient is φ = 8930787964212.

The previous prime is 13396192926559. The next prime is 13396192926707. The reversal of 13396192926561 is 16562929169331.

The square root of 13396192926561 is 3660081.

It is a perfect power (a square), and thus also a powerful number.

13396192926561 is a `hidden beast` number, since 1 + 3 + 3 + 9 + 61 + 9 + 2 + 9 + 2 + 6 + 561 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 13396192926561 - 2¹ = 13396192926559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13396192925561) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10370230 + ... + 11590256.

Almost surely, 2^{13396192926561} is an apocalyptic number.

13396192926561 is the 3660081-st square number.

13396192926561 is the 1830041-st centered octagonal number.

It is an amenable number.

13396192926561 is a deficient number, since it is larger than the sum of its proper divisors (5953879383280).

13396192926561 is an frugal number, since it uses more digits than its factorization.

13396192926561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440060 (or 1220030 counting only the distinct ones).

The product of its digits is 28343520, while the sum is 63.

The spelling of 13396192926561 in words is "thirteen trillion, three hundred ninety-six billion, one hundred ninety-two million, nine hundred twenty-six thousand, five hundred sixty-one".