13185720823796 has 12 divisors (see below), whose sum is σ = 23075047065252. Its totient is φ = 6592850233728.

The previous prime is 13185720823789. The next prime is 13185720823811. The reversal of 13185720823796 is 69732802758131.

It can be written as a sum of positive squares in 2 ways, for example, as 2506458912400 + 10679261911396 = 1583180^2 + 3267914^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 883436 + ... + 5210748.

It is an arithmetic number, because the mean of its divisors is an integer number (1922920588771).

Almost surely, 2^{13185720823796} is an apocalyptic number.

It is an amenable number.

13185720823796 is a deficient number, since it is larger than the sum of its proper divisors (9889326241456).

13185720823796 is a wasteful number, since it uses less digits than its factorization.

13185720823796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5089090 (or 5089088 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 62.

The spelling of 13185720823796 in words is "thirteen trillion, one hundred eighty-five billion, seven hundred twenty million, eight hundred twenty-three thousand, seven hundred ninety-six".