18999011101 has 8 divisors (see below), whose sum is σ = 21720142080. Its totient is φ = 16279626768.

The previous prime is 18999011099. The next prime is 18999011117. The reversal of 18999011101 is 10111099981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18999011101 - 2¹ = 18999011099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18999011131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 413266 + ... + 456931.

It is an arithmetic number, because the mean of its divisors is an integer number (2715017760).

Almost surely, 2^18999011101 is an apocalyptic number.

It is an amenable number.

18999011101 is a deficient number, since it is larger than the sum of its proper divisors (2721130979).

18999011101 is an equidigital number, since it uses as much as digits as its factorization.

18999011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873323.

The product of its (nonzero) digits is 5832, while the sum is 40.

The spelling of 18999011101 in words is "eighteen billion, nine hundred ninety-nine million, eleven thousand, one hundred one".