13757891666399 has 4 divisors (see below), whose sum is σ = 13776211096800. Its totient is φ = 13739572236000.

The previous prime is 13757891666381. The next prime is 13757891666413. The reversal of 13757891666399 is 99366619875731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13757891666399 is a prime.

It is a super-3 number, since 3×13757891666399³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13757891666339) 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 in 3 ways as a sum of consecutive naturals, for example, 9159714074 + ... + 9159715575.

It is an arithmetic number, because the mean of its divisors is an integer number (3444052774200).

Almost surely, 2^{13757891666399} is an apocalyptic number.

13757891666399 is a deficient number, since it is larger than the sum of its proper divisors (18319430401).

13757891666399 is an equidigital number, since it uses as much as digits as its factorization.

13757891666399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18319430400.

The product of its digits is 2777664960, while the sum is 80.

The spelling of 13757891666399 in words is "thirteen trillion, seven hundred fifty-seven billion, eight hundred ninety-one million, six hundred sixty-six thousand, three hundred ninety-nine".