87515812036687 has 2 divisors, whose sum is σ = 87515812036688. Its totient is φ = 87515812036686.

The previous prime is 87515812036621. The next prime is 87515812036703. The reversal of 87515812036687 is 78663021851578.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87515812036687 - 2¹¹ = 87515812034639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87515812036607) 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 as a sum of consecutive naturals, namely, 43757906018343 + 43757906018344.

It is an arithmetic number, because the mean of its divisors is an integer number (43757906018344).

Almost surely, 2^{87515812036687} is an apocalyptic number.

87515812036687 is a deficient number, since it is larger than the sum of its proper divisors (1).

87515812036687 is an equidigital number, since it uses as much as digits as its factorization.

87515812036687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135475200, while the sum is 67.

The spelling of 87515812036687 in words is "eighty-seven trillion, five hundred fifteen billion, eight hundred twelve million, thirty-six thousand, six hundred eighty-seven".