99254609081 has 2 divisors, whose sum is σ = 99254609082. Its totient is φ = 99254609080.

The previous prime is 99254609063. The next prime is 99254609093. The reversal of 99254609081 is 18090645299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82546461481 + 16708147600 = 287309^2 + 129260^2 .

It is a cyclic number.

It is not a de Polignac number, because 99254609081 - 2³⁴ = 82074739897 is a prime.

It is a super-2 number, since 2×99254609081² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (99254609381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49627304540 + 49627304541.

It is an arithmetic number, because the mean of its divisors is an integer number (49627304541).

Almost surely, 2^99254609081 is an apocalyptic number.

It is an amenable number.

99254609081 is a deficient number, since it is larger than the sum of its proper divisors (1).

99254609081 is an equidigital number, since it uses as much as digits as its factorization.

99254609081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 99254609081 in words is "ninety-nine billion, two hundred fifty-four million, six hundred nine thousand, eighty-one".