18010475279 has 4 divisors (see below), whose sum is σ = 18010817760. Its totient is φ = 18010132800.

The previous prime is 18010475261. The next prime is 18010475303. The reversal of 18010475279 is 97257401081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97257401081 = 17 ⋅5721023593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18010475279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18010472279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73922 + ... + 203679.

It is an arithmetic number, because the mean of its divisors is an integer number (4502704440).

Almost surely, 2^18010475279 is an apocalyptic number.

18010475279 is a deficient number, since it is larger than the sum of its proper divisors (342481).

18010475279 is an equidigital number, since it uses as much as digits as its factorization.

18010475279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342480.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 18010475279 in words is "eighteen billion, ten million, four hundred seventy-five thousand, two hundred seventy-nine".