99238540303649 has 2 divisors, whose sum is σ = 99238540303650. Its totient is φ = 99238540303648.

The previous prime is 99238540303619. The next prime is 99238540303733. The reversal of 99238540303649 is 94630304583299.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95934816015424 + 3303724288225 = 9794632^2 + 1817615^2 .

It is a cyclic number.

It is not a de Polignac number, because 99238540303649 - 2⁸ = 99238540303393 is a prime.

It is not a weakly prime, because it can be changed into another prime (99238540303619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49619270151824 + 49619270151825.

It is an arithmetic number, because the mean of its divisors is an integer number (49619270151825).

Almost surely, 2^{99238540303649} is an apocalyptic number.

It is an amenable number.

99238540303649 is a deficient number, since it is larger than the sum of its proper divisors (1).

99238540303649 is an equidigital number, since it uses as much as digits as its factorization.

99238540303649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151165440, while the sum is 65.

The spelling of 99238540303649 in words is "ninety-nine trillion, two hundred thirty-eight billion, five hundred forty million, three hundred three thousand, six hundred forty-nine".