99057364981 has 2 divisors, whose sum is σ = 99057364982. Its totient is φ = 99057364980.

The previous prime is 99057364979. The next prime is 99057364999. The reversal of 99057364981 is 18946375099.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55570518756 + 43486846225 = 235734^2 + 208535^2 .

It is a cyclic number.

It is not a de Polignac number, because 99057364981 - 2¹ = 99057364979 is a prime.

It is a super-2 number, since 2×99057364981² (a number of 23 digits) contains 22 as substring.

Together with 99057364979, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99057364181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49528682490 + 49528682491.

It is an arithmetic number, because the mean of its divisors is an integer number (49528682491).

Almost surely, 2^99057364981 is an apocalyptic number.

It is an amenable number.

99057364981 is a deficient number, since it is larger than the sum of its proper divisors (1).

99057364981 is an equidigital number, since it uses as much as digits as its factorization.

99057364981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 61.

The spelling of 99057364981 in words is "ninety-nine billion, fifty-seven million, three hundred sixty-four thousand, nine hundred eighty-one".