99609009953 has 2 divisors, whose sum is σ = 99609009954. Its totient is φ = 99609009952.

The previous prime is 99609009901. The next prime is 99609009961. The reversal of 99609009953 is 35990090699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86873436049 + 12735573904 = 294743^2 + 112852^2 .

It is a cyclic number.

It is not a de Polignac number, because 99609009953 - 2¹⁰ = 99609008929 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99609009892 and 99609009901.

It is not a weakly prime, because it can be changed into another prime (99609009053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49804504976 + 49804504977.

It is an arithmetic number, because the mean of its divisors is an integer number (49804504977).

Almost surely, 2^99609009953 is an apocalyptic number.

It is an amenable number.

99609009953 is a deficient number, since it is larger than the sum of its proper divisors (1).

99609009953 is an equidigital number, since it uses as much as digits as its factorization.

99609009953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5314410, while the sum is 59.

The spelling of 99609009953 in words is "ninety-nine billion, six hundred nine million, nine thousand, nine hundred fifty-three".