13185720823795 has 16 divisors (see below), whose sum is σ = 17040422155680. Its totient is φ = 9736911281664.

The previous prime is 13185720823789. The next prime is 13185720823811. The reversal of 13185720823795 is 59732802758131.

It is a cyclic number.

It is not a de Polignac number, because 13185720823795 - 2²¹ = 13185718726643 is a prime.

It is a super-2 number, since 2×13185720823795² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258267 + ... + 5141803.

It is an arithmetic number, because the mean of its divisors is an integer number (1065026384730).

Almost surely, 2^{13185720823795} is an apocalyptic number.

13185720823795 is a deficient number, since it is larger than the sum of its proper divisors (3854701331885).

13185720823795 is a wasteful number, since it uses less digits than its factorization.

13185720823795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4925094.

The product of its (nonzero) digits is 25401600, while the sum is 61.

The spelling of 13185720823795 in words is "thirteen trillion, one hundred eighty-five billion, seven hundred twenty million, eight hundred twenty-three thousand, seven hundred ninety-five".