13998251487587 has 2 divisors, whose sum is σ = 13998251487588. Its totient is φ = 13998251487586.

The previous prime is 13998251487557. The next prime is 13998251487673. The reversal of 13998251487587 is 78578415289931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13998251487587 - 2⁶ = 13998251487523 is a prime.

It is not a weakly prime, because it can be changed into another prime (13998251487527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6999125743793 + 6999125743794.

It is an arithmetic number, because the mean of its divisors is an integer number (6999125743794).

Almost surely, 2^{13998251487587} is an apocalyptic number.

13998251487587 is a deficient number, since it is larger than the sum of its proper divisors (1).

13998251487587 is an equidigital number, since it uses as much as digits as its factorization.

13998251487587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1219276800, while the sum is 77.

The spelling of 13998251487587 in words is "thirteen trillion, nine hundred ninety-eight billion, two hundred fifty-one million, four hundred eighty-seven thousand, five hundred eighty-seven".