87518150693 has 2 divisors, whose sum is σ = 87518150694. Its totient is φ = 87518150692.

The previous prime is 87518150689. The next prime is 87518150729. The reversal of 87518150693 is 39605181578.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48067054564 + 39451096129 = 219242^2 + 198623^2 .

It is a cyclic number.

It is not a de Polignac number, because 87518150693 - 2² = 87518150689 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87518150663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43759075346 + 43759075347.

It is an arithmetic number, because the mean of its divisors is an integer number (43759075347).

Almost surely, 2^87518150693 is an apocalyptic number.

It is an amenable number.

87518150693 is a deficient number, since it is larger than the sum of its proper divisors (1).

87518150693 is an equidigital number, since it uses as much as digits as its factorization.

87518150693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 87518150693 in words is "eighty-seven billion, five hundred eighteen million, one hundred fifty thousand, six hundred ninety-three".