87198250897 has 2 divisors, whose sum is σ = 87198250898. Its totient is φ = 87198250896.

The previous prime is 87198250883. The next prime is 87198250907. The reversal of 87198250897 is 79805289178.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54957893761 + 32240357136 = 234431^2 + 179556^2 .

It is a cyclic number.

It is not a de Polignac number, because 87198250897 - 2¹¹ = 87198248849 is a prime.

It is a super-2 number, since 2×87198250897² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87198253897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43599125448 + 43599125449.

It is an arithmetic number, because the mean of its divisors is an integer number (43599125449).

Almost surely, 2^87198250897 is an apocalyptic number.

It is an amenable number.

87198250897 is a deficient number, since it is larger than the sum of its proper divisors (1).

87198250897 is an equidigital number, since it uses as much as digits as its factorization.

87198250897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 64.

The spelling of 87198250897 in words is "eighty-seven billion, one hundred ninety-eight million, two hundred fifty thousand, eight hundred ninety-seven".