87895367993 has 2 divisors, whose sum is σ = 87895367994. Its totient is φ = 87895367992.

The previous prime is 87895367969. The next prime is 87895368031. The reversal of 87895367993 is 39976359878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87599424784 + 295943209 = 295972^2 + 17203^2 .

It is a cyclic number.

It is not a de Polignac number, because 87895367993 - 2¹⁰ = 87895366969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87895367993.

It is not a weakly prime, because it can be changed into another prime (87895367933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43947683996 + 43947683997.

It is an arithmetic number, because the mean of its divisors is an integer number (43947683997).

Almost surely, 2^87895367993 is an apocalyptic number.

It is an amenable number.

87895367993 is a deficient number, since it is larger than the sum of its proper divisors (1).

87895367993 is an equidigital number, since it uses as much as digits as its factorization.

87895367993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 617258880, while the sum is 74.

The spelling of 87895367993 in words is "eighty-seven billion, eight hundred ninety-five million, three hundred sixty-seven thousand, nine hundred ninety-three".