99508449851 has 2 divisors, whose sum is σ = 99508449852. Its totient is φ = 99508449850.

The previous prime is 99508449847. The next prime is 99508449857. The reversal of 99508449851 is 15894480599.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99508449851 - 2² = 99508449847 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (99508449857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49754224925 + 49754224926.

It is an arithmetic number, because the mean of its divisors is an integer number (49754224926).

Almost surely, 2^99508449851 is an apocalyptic number.

99508449851 is a deficient number, since it is larger than the sum of its proper divisors (1).

99508449851 is an equidigital number, since it uses as much as digits as its factorization.

99508449851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18662400, while the sum is 62.

The spelling of 99508449851 in words is "ninety-nine billion, five hundred eight million, four hundred forty-nine thousand, eight hundred fifty-one".