99366666399 has 108 divisors (see below), whose sum is σ = 197639763048. Its totient is φ = 47648018880.

The previous prime is 99366666353. The next prime is 99366666409.

99366666399 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99366666399 - 2⁹ = 99366665887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99366666599) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 622072 + ... + 765314.

It is an arithmetic number, because the mean of its divisors is an integer number (1829997806).

Almost surely, 2^99366666399 is an apocalyptic number.

99366666399 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99366666399 is a deficient number, since it is larger than the sum of its proper divisors (98273096649).

99366666399 is a wasteful number, since it uses less digits than its factorization.

99366666399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143298 (or 143277 counting only the distinct ones).

The product of its digits is 459165024, while the sum is 72.

The spelling of 99366666399 in words is "ninety-nine billion, three hundred sixty-six million, six hundred sixty-six thousand, three hundred ninety-nine".