18040217003 has 16 divisors (see below), whose sum is σ = 19006479360. Its totient is φ = 17089891104.

The previous prime is 18040216979. The next prime is 18040217051. The reversal of 18040217003 is 30071204081.

It is a cyclic number.

It is not a de Polignac number, because 18040217003 - 2³⁰ = 16966475179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18040217093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037858 + ... + 1055096.

It is an arithmetic number, because the mean of its divisors is an integer number (1187904960).

Almost surely, 2^18040217003 is an apocalyptic number.

18040217003 is a deficient number, since it is larger than the sum of its proper divisors (966262357).

18040217003 is a wasteful number, since it uses less digits than its factorization.

18040217003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17698.

The product of its (nonzero) digits is 1344, while the sum is 26.

The spelling of 18040217003 in words is "eighteen billion, forty million, two hundred seventeen thousand, three".