91099452599 has 2 divisors, whose sum is σ = 91099452600. Its totient is φ = 91099452598.

The previous prime is 91099452553. The next prime is 91099452601. The reversal of 91099452599 is 99525499019.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91099452599 - 2⁸ = 91099452343 is a prime.

It is a super-3 number, since 3×91099452599³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 91099452601, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91099452529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45549726299 + 45549726300.

It is an arithmetic number, because the mean of its divisors is an integer number (45549726300).

Almost surely, 2^91099452599 is an apocalyptic number.

91099452599 is a deficient number, since it is larger than the sum of its proper divisors (1).

91099452599 is an equidigital number, since it uses as much as digits as its factorization.

91099452599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11809800, while the sum is 62.

The spelling of 91099452599 in words is "ninety-one billion, ninety-nine million, four hundred fifty-two thousand, five hundred ninety-nine".