99623440633 has 2 divisors, whose sum is σ = 99623440634. Its totient is φ = 99623440632.

The previous prime is 99623440619. The next prime is 99623440661. The reversal of 99623440633 is 33604432699.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99598310464 + 25130169 = 315592^2 + 5013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99623440633 is a prime.

It is not a weakly prime, because it can be changed into another prime (99623440673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49811720316 + 49811720317.

It is an arithmetic number, because the mean of its divisors is an integer number (49811720317).

Almost surely, 2^99623440633 is an apocalyptic number.

It is an amenable number.

99623440633 is a deficient number, since it is larger than the sum of its proper divisors (1).

99623440633 is an equidigital number, since it uses as much as digits as its factorization.

99623440633 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 49.

The spelling of 99623440633 in words is "ninety-nine billion, six hundred twenty-three million, four hundred forty thousand, six hundred thirty-three".