99508233491 has 2 divisors, whose sum is σ = 99508233492. Its totient is φ = 99508233490.

The previous prime is 99508233481. The next prime is 99508233499. The reversal of 99508233491 is 19433280599.

It is a strong prime.

It is an emirp because it is prime and its reverse (19433280599) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99508233491 is a prime.

It is not a weakly prime, because it can be changed into another prime (99508233499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49754116745 + 49754116746.

It is an arithmetic number, because the mean of its divisors is an integer number (49754116746).

Almost surely, 2^99508233491 is an apocalyptic number.

99508233491 is a deficient number, since it is larger than the sum of its proper divisors (1).

99508233491 is an equidigital number, since it uses as much as digits as its factorization.

99508233491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 53.

The spelling of 99508233491 in words is "ninety-nine billion, five hundred eight million, two hundred thirty-three thousand, four hundred ninety-one".