18017010143 has 4 divisors (see below), whose sum is σ = 19654920168. Its totient is φ = 16379100120.

The previous prime is 18017010131. The next prime is 18017010149. The reversal of 18017010143 is 34101071081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18017010143 - 2⁶ = 18017010079 is a prime.

It is a super-2 number, since 2×18017010143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18017010149) 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 3 ways as a sum of consecutive naturals, for example, 818954996 + ... + 818955017.

It is an arithmetic number, because the mean of its divisors is an integer number (4913730042).

Almost surely, 2^18017010143 is an apocalyptic number.

18017010143 is a deficient number, since it is larger than the sum of its proper divisors (1637910025).

18017010143 is a wasteful number, since it uses less digits than its factorization.

18017010143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637910024.

The product of its (nonzero) digits is 672, while the sum is 26.

The spelling of 18017010143 in words is "eighteen billion, seventeen million, ten thousand, one hundred forty-three".