99923635321 has 2 divisors, whose sum is σ = 99923635322. Its totient is φ = 99923635320.

The previous prime is 99923635261. The next prime is 99923635423. The reversal of 99923635321 is 12353632999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55429639225 + 44493996096 = 235435^2 + 210936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99923635321 is a prime.

It is not a weakly prime, because it can be changed into another prime (99923635121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49961817660 + 49961817661.

It is an arithmetic number, because the mean of its divisors is an integer number (49961817661).

Almost surely, 2^99923635321 is an apocalyptic number.

It is an amenable number.

99923635321 is a deficient number, since it is larger than the sum of its proper divisors (1).

99923635321 is an equidigital number, since it uses as much as digits as its factorization.

99923635321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2361960, while the sum is 52.

The spelling of 99923635321 in words is "ninety-nine billion, nine hundred twenty-three million, six hundred thirty-five thousand, three hundred twenty-one".