87808942297 has 2 divisors, whose sum is σ = 87808942298. Its totient is φ = 87808942296.

The previous prime is 87808942289. The next prime is 87808942307. The reversal of 87808942297 is 79224980878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57874406041 + 29934536256 = 240571^2 + 173016^2 .

It is a cyclic number.

It is not a de Polignac number, because 87808942297 - 2³ = 87808942289 is a prime.

It is not a weakly prime, because it can be changed into another prime (87808942237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43904471148 + 43904471149.

It is an arithmetic number, because the mean of its divisors is an integer number (43904471149).

Almost surely, 2^87808942297 is an apocalyptic number.

It is an amenable number.

87808942297 is a deficient number, since it is larger than the sum of its proper divisors (1).

87808942297 is an equidigital number, since it uses as much as digits as its factorization.

87808942297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32514048, while the sum is 64.

The spelling of 87808942297 in words is "eighty-seven billion, eight hundred eight million, nine hundred forty-two thousand, two hundred ninety-seven".