99985008481 has 2 divisors, whose sum is σ = 99985008482. Its totient is φ = 99985008480.

The previous prime is 99985008421. The next prime is 99985008503. The reversal of 99985008481 is 18480058999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74627312400 + 25357696081 = 273180^2 + 159241^2 .

It is a cyclic number.

It is not a de Polignac number, because 99985008481 - 2¹³ = 99985000289 is a prime.

It is a super-2 number, since 2×99985008481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99985008401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49992504240 + 49992504241.

It is an arithmetic number, because the mean of its divisors is an integer number (49992504241).

Almost surely, 2^99985008481 is an apocalyptic number.

99985008481 is the 182561-st hex number.

It is an amenable number.

99985008481 is a deficient number, since it is larger than the sum of its proper divisors (1).

99985008481 is an equidigital number, since it uses as much as digits as its factorization.

99985008481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 61.

The spelling of 99985008481 in words is "ninety-nine billion, nine hundred eighty-five million, eight thousand, four hundred eighty-one".