99644190433 has 4 divisors (see below), whose sum is σ = 100240862400. Its totient is φ = 99047518468.

The previous prime is 99644190419. The next prime is 99644190491. The reversal of 99644190433 is 33409144699.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99644190433 - 2¹³ = 99644182241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99644191433) 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 3 ways as a sum of consecutive naturals, for example, 298335733 + ... + 298336066.

It is an arithmetic number, because the mean of its divisors is an integer number (25060215600).

Almost surely, 2^99644190433 is an apocalyptic number.

It is an amenable number.

99644190433 is a deficient number, since it is larger than the sum of its proper divisors (596671967).

99644190433 is a wasteful number, since it uses less digits than its factorization.

99644190433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596671966.

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 99644190433 in words is "ninety-nine billion, six hundred forty-four million, one hundred ninety thousand, four hundred thirty-three".