108515564987 has 2 divisors, whose sum is σ = 108515564988. Its totient is φ = 108515564986.

The previous prime is 108515564981. The next prime is 108515565001. The reversal of 108515564987 is 789465515801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 108515564987 - 2⁶ = 108515564923 is a prime.

It is not a weakly prime, because it can be changed into another prime (108515564981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54257782493 + 54257782494.

It is an arithmetic number, because the mean of its divisors is an integer number (54257782494).

Almost surely, 2^108515564987 is an apocalyptic number.

108515564987 is a deficient number, since it is larger than the sum of its proper divisors (1).

108515564987 is an equidigital number, since it uses as much as digits as its factorization.

108515564987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096000, while the sum is 59.

The spelling of 108515564987 in words is "one hundred eight billion, five hundred fifteen million, five hundred sixty-four thousand, nine hundred eighty-seven".