99535853599 has 40 divisors (see below), whose sum is σ = 127960301392. Its totient is φ = 76921125120.

The previous prime is 99535853579. The next prime is 99535853609.

99535853599 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99535853599 - 2¹⁷ = 99535722527 is a prime.

It is a super-2 number, since 2×99535853599² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99535853509) 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 39 ways as a sum of consecutive naturals, for example, 1305079 + ... + 1379239.

Almost surely, 2^99535853599 is an apocalyptic number.

99535853599 is a deficient number, since it is larger than the sum of its proper divisors (28424447793).

99535853599 is an equidigital number, since it uses as much as digits as its factorization.

99535853599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74245 (or 74224 counting only the distinct ones).

The product of its digits is 295245000, while the sum is 70.

The spelling of 99535853599 in words is "ninety-nine billion, five hundred thirty-five million, eight hundred fifty-three thousand, five hundred ninety-nine".