99358586891 has 2 divisors, whose sum is σ = 99358586892. Its totient is φ = 99358586890.

The previous prime is 99358586813. The next prime is 99358586897. The reversal of 99358586891 is 19868585399.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99358586891 is a prime.

It is not a weakly prime, because it can be changed into another prime (99358586897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49679293445 + 49679293446.

It is an arithmetic number, because the mean of its divisors is an integer number (49679293446).

Almost surely, 2^99358586891 is an apocalyptic number.

99358586891 is a deficient number, since it is larger than the sum of its proper divisors (1).

99358586891 is an equidigital number, since it uses as much as digits as its factorization.

99358586891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 167961600, while the sum is 71.

The spelling of 99358586891 in words is "ninety-nine billion, three hundred fifty-eight million, five hundred eighty-six thousand, eight hundred ninety-one".