99199952081 has 2 divisors, whose sum is σ = 99199952082. Its totient is φ = 99199952080.

The previous prime is 99199952003. The next prime is 99199952129. The reversal of 99199952081 is 18025999199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64526160400 + 34673791681 = 254020^2 + 186209^2 .

It is a cyclic number.

It is not a de Polignac number, because 99199952081 - 2²⁶ = 99132843217 is a prime.

It is a super-2 number, since 2×99199952081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99199952281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49599976040 + 49599976041.

It is an arithmetic number, because the mean of its divisors is an integer number (49599976041).

Almost surely, 2^99199952081 is an apocalyptic number.

It is an amenable number.

99199952081 is a deficient number, since it is larger than the sum of its proper divisors (1).

99199952081 is an equidigital number, since it uses as much as digits as its factorization.

99199952081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4723920, while the sum is 62.

The spelling of 99199952081 in words is "ninety-nine billion, one hundred ninety-nine million, nine hundred fifty-two thousand, eighty-one".