99644797253 has 8 divisors (see below), whose sum is σ = 99955296672. Its totient is φ = 99334432656.

The previous prime is 99644797183. The next prime is 99644797277. The reversal of 99644797253 is 35279744699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99644797253 - 2⁸ = 99644796997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99644797253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99644790253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563926 + ... + 1626392.

It is an arithmetic number, because the mean of its divisors is an integer number (12494412084).

Almost surely, 2^99644797253 is an apocalyptic number.

It is an amenable number.

99644797253 is a deficient number, since it is larger than the sum of its proper divisors (310499419).

99644797253 is a wasteful number, since it uses less digits than its factorization.

99644797253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67411.

The product of its digits is 102876480, while the sum is 65.

The spelling of 99644797253 in words is "ninety-nine billion, six hundred forty-four million, seven hundred ninety-seven thousand, two hundred fifty-three".