18000099099 has 32 divisors (see below), whose sum is σ = 26793815040. Its totient is φ = 11943048096.

The previous prime is 18000099097. The next prime is 18000099107. The reversal of 18000099099 is 99099000081.

It is not a de Polignac number, because 18000099099 - 2¹ = 18000099097 is a prime.

It is a super-2 number, since 2×18000099099² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18000099097) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7077022 + ... + 7079564.

It is an arithmetic number, because the mean of its divisors is an integer number (837306720).

Almost surely, 2^18000099099 is an apocalyptic number.

18000099099 is a deficient number, since it is larger than the sum of its proper divisors (8793715941).

18000099099 is a wasteful number, since it uses less digits than its factorization.

18000099099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696 (or 3690 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The spelling of 18000099099 in words is "eighteen billion, ninety-nine thousand, ninety-nine".