87192918559 has 2 divisors, whose sum is σ = 87192918560. Its totient is φ = 87192918558.

The previous prime is 87192918539. The next prime is 87192918613. The reversal of 87192918559 is 95581929178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87192918559 - 2¹⁹ = 87192394271 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87192918559.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87192918539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43596459279 + 43596459280.

It is an arithmetic number, because the mean of its divisors is an integer number (43596459280).

Almost surely, 2^87192918559 is an apocalyptic number.

87192918559 is a deficient number, since it is larger than the sum of its proper divisors (1).

87192918559 is an equidigital number, since it uses as much as digits as its factorization.

87192918559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 64.

The spelling of 87192918559 in words is "eighty-seven billion, one hundred ninety-two million, nine hundred eighteen thousand, five hundred fifty-nine".