13427716645087 has 4 divisors (see below), whose sum is σ = 13483899560160. Its totient is φ = 13371533730016.

The previous prime is 13427716645081. The next prime is 13427716645121. The reversal of 13427716645087 is 78054661772431.

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-13427716645087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13427716645081) 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, 28091457178 + ... + 28091457655.

It is an arithmetic number, because the mean of its divisors is an integer number (3370974890040).

Almost surely, 2^{13427716645087} is an apocalyptic number.

13427716645087 is a deficient number, since it is larger than the sum of its proper divisors (56182915073).

13427716645087 is an equidigital number, since it uses as much as digits as its factorization.

13427716645087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56182915072.

The product of its (nonzero) digits is 47416320, while the sum is 61.

The spelling of 13427716645087 in words is "thirteen trillion, four hundred twenty-seven billion, seven hundred sixteen million, six hundred forty-five thousand, eighty-seven".