15417112987 has 2 divisors, whose sum is σ = 15417112988. Its totient is φ = 15417112986.

The previous prime is 15417112951. The next prime is 15417112999. The reversal of 15417112987 is 78921171451.

It is a strong prime.

It is an emirp because it is prime and its reverse (78921171451) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15417112987 is a prime.

It is not a weakly prime, because it can be changed into another prime (15417112187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7708556493 + 7708556494.

It is an arithmetic number, because the mean of its divisors is an integer number (7708556494).

Almost surely, 2^15417112987 is an apocalyptic number.

15417112987 is a deficient number, since it is larger than the sum of its proper divisors (1).

15417112987 is an equidigital number, since it uses as much as digits as its factorization.

15417112987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 46.

The spelling of 15417112987 in words is "fifteen billion, four hundred seventeen million, one hundred twelve thousand, nine hundred eighty-seven".