99783638799 has 32 divisors (see below), whose sum is σ = 149214744000. Its totient is φ = 58889886720.

The previous prime is 99783638791. The next prime is 99783638803.

99783638799 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99783638799 - 2³ = 99783638791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99783638791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127542 + ... + 464579.

It is an arithmetic number, because the mean of its divisors is an integer number (4662960750).

Almost surely, 2^99783638799 is an apocalyptic number.

99783638799 is a deficient number, since it is larger than the sum of its proper divisors (49431105201).

99783638799 is a wasteful number, since it uses less digits than its factorization.

99783638799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592315.

The product of its digits is 1111065984, while the sum is 78.

The spelling of 99783638799 in words is "ninety-nine billion, seven hundred eighty-three million, six hundred thirty-eight thousand, seven hundred ninety-nine".