18220935271 has 16 divisors (see below), whose sum is σ = 23704708608. Its totient is φ = 13580820000.

The previous prime is 18220935259. The next prime is 18220935281. The reversal of 18220935271 is 17253902281.

It is not a de Polignac number, because 18220935271 - 2⁷ = 18220935143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18220935241) 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 15 ways as a sum of consecutive naturals, for example, 5142480 + ... + 5146021.

It is an arithmetic number, because the mean of its divisors is an integer number (1481544288).

Almost surely, 2^18220935271 is an apocalyptic number.

18220935271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

18220935271 is a deficient number, since it is larger than the sum of its proper divisors (5483773337).

18220935271 is a wasteful number, since it uses less digits than its factorization.

18220935271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10288542.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 18220935271 in words is "eighteen billion, two hundred twenty million, nine hundred thirty-five thousand, two hundred seventy-one".