99388797953 has 2 divisors, whose sum is σ = 99388797954. Its totient is φ = 99388797952.

The previous prime is 99388797919. The next prime is 99388797979. The reversal of 99388797953 is 35979788399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84109860289 + 15278937664 = 290017^2 + 123608^2 .

It is a cyclic number.

It is not a de Polignac number, because 99388797953 - 2¹⁰ = 99388796929 is a prime.

It is not a weakly prime, because it can be changed into another prime (99388797253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49694398976 + 49694398977.

It is an arithmetic number, because the mean of its divisors is an integer number (49694398977).

Almost surely, 2^99388797953 is an apocalyptic number.

It is an amenable number.

99388797953 is a deficient number, since it is larger than the sum of its proper divisors (1).

99388797953 is an equidigital number, since it uses as much as digits as its factorization.

99388797953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 925888320, while the sum is 77.

The spelling of 99388797953 in words is "ninety-nine billion, three hundred eighty-eight million, seven hundred ninety-seven thousand, nine hundred fifty-three".