18142656011 has 4 divisors (see below), whose sum is σ = 18361242312. Its totient is φ = 17924069712.

The previous prime is 18142656001. The next prime is 18142656023. The reversal of 18142656011 is 11065624181.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18142656011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18142656001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109293026 + ... + 109293191.

It is an arithmetic number, because the mean of its divisors is an integer number (4590310578).

Almost surely, 2^18142656011 is an apocalyptic number.

18142656011 is a deficient number, since it is larger than the sum of its proper divisors (218586301).

18142656011 is an equidigital number, since it uses as much as digits as its factorization.

18142656011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218586300.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 18142656011 in words is "eighteen billion, one hundred forty-two million, six hundred fifty-six thousand, eleven".