99115468217 has 2 divisors, whose sum is σ = 99115468218. Its totient is φ = 99115468216.

The previous prime is 99115468171. The next prime is 99115468279. The reversal of 99115468217 is 71286451199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82858198201 + 16257270016 = 287851^2 + 127504^2 .

It is a cyclic number.

It is not a de Polignac number, because 99115468217 - 2⁸ = 99115467961 is a prime.

It is not a weakly prime, because it can be changed into another prime (99115458217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49557734108 + 49557734109.

It is an arithmetic number, because the mean of its divisors is an integer number (49557734109).

Almost surely, 2^99115468217 is an apocalyptic number.

It is an amenable number.

99115468217 is a deficient number, since it is larger than the sum of its proper divisors (1).

99115468217 is an equidigital number, since it uses as much as digits as its factorization.

99115468217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 53.

The spelling of 99115468217 in words is "ninety-nine billion, one hundred fifteen million, four hundred sixty-eight thousand, two hundred seventeen".