13876646657987 has 2 divisors, whose sum is σ = 13876646657988. Its totient is φ = 13876646657986.

The previous prime is 13876646657983. The next prime is 13876646657999. The reversal of 13876646657987 is 78975664667831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13876646657987 - 2² = 13876646657983 is a prime.

It is a super-2 number, since 2×13876646657987² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13876646657983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6938323328993 + 6938323328994.

It is an arithmetic number, because the mean of its divisors is an integer number (6938323328994).

Almost surely, 2^{13876646657987} is an apocalyptic number.

13876646657987 is a deficient number, since it is larger than the sum of its proper divisors (1).

13876646657987 is an equidigital number, since it uses as much as digits as its factorization.

13876646657987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15362887680, while the sum is 83.

The spelling of 13876646657987 in words is "thirteen trillion, eight hundred seventy-six billion, six hundred forty-six million, six hundred fifty-seven thousand, nine hundred eighty-seven".