13774729312391 has 2 divisors, whose sum is σ = 13774729312392. Its totient is φ = 13774729312390.

The previous prime is 13774729312387. The next prime is 13774729312417. The reversal of 13774729312391 is 19321392747731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13774729312391 - 2² = 13774729312387 is a prime.

It is a super-2 number, since 2×13774729312391² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13774729312391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13774729312361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6887364656195 + 6887364656196.

It is an arithmetic number, because the mean of its divisors is an integer number (6887364656196).

Almost surely, 2^{13774729312391} is an apocalyptic number.

13774729312391 is a deficient number, since it is larger than the sum of its proper divisors (1).

13774729312391 is an equidigital number, since it uses as much as digits as its factorization.

13774729312391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12002256, while the sum is 59.

The spelling of 13774729312391 in words is "thirteen trillion, seven hundred seventy-four billion, seven hundred twenty-nine million, three hundred twelve thousand, three hundred ninety-one".