87508751593 has 2 divisors, whose sum is σ = 87508751594. Its totient is φ = 87508751592.

The previous prime is 87508751579. The next prime is 87508751683. The reversal of 87508751593 is 39515780578.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73707906064 + 13800845529 = 271492^2 + 117477^2 .

It is a cyclic number.

It is not a de Polignac number, because 87508751593 - 2²¹ = 87506654441 is a prime.

It is not a weakly prime, because it can be changed into another prime (87508751503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43754375796 + 43754375797.

It is an arithmetic number, because the mean of its divisors is an integer number (43754375797).

Almost surely, 2^87508751593 is an apocalyptic number.

It is an amenable number.

87508751593 is a deficient number, since it is larger than the sum of its proper divisors (1).

87508751593 is an equidigital number, since it uses as much as digits as its factorization.

87508751593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584000, while the sum is 58.

The spelling of 87508751593 in words is "eighty-seven billion, five hundred eight million, seven hundred fifty-one thousand, five hundred ninety-three".