13185768406273 has 4 divisors (see below), whose sum is σ = 13185804984768. Its totient is φ = 13185731827780.

The previous prime is 13185768406253. The next prime is 13185768406361. The reversal of 13185768406273 is 37260486758131.

13185768406273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13185768406273 - 2⁵ = 13185768406241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13185768406253) 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, 17743093 + ... + 18471298.

It is an arithmetic number, because the mean of its divisors is an integer number (3296451246192).

Almost surely, 2^{13185768406273} is an apocalyptic number.

It is an amenable number.

13185768406273 is a deficient number, since it is larger than the sum of its proper divisors (36578495).

13185768406273 is an equidigital number, since it uses as much as digits as its factorization.

13185768406273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36578494.

The product of its (nonzero) digits is 40642560, while the sum is 61.

The spelling of 13185768406273 in words is "thirteen trillion, one hundred eighty-five billion, seven hundred sixty-eight million, four hundred six thousand, two hundred seventy-three".