18020476827 has 12 divisors (see below), whose sum is σ = 26031334680. Its totient is φ = 12012840288.

The previous prime is 18020476819. The next prime is 18020476861. The reversal of 18020476827 is 72867402081.

18020476827 is a `hidden beast` number, since 1 + 80 + 20 + 476 + 82 + 7 = 666.

It is not a de Polignac number, because 18020476827 - 2³ = 18020476819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18020476807) 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 11 ways as a sum of consecutive naturals, for example, 93324 + ... + 211542.

It is an arithmetic number, because the mean of its divisors is an integer number (2169277890).

Almost surely, 2^18020476827 is an apocalyptic number.

18020476827 is a deficient number, since it is larger than the sum of its proper divisors (8010857853).

18020476827 is a wasteful number, since it uses less digits than its factorization.

18020476827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135162 (or 135159 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 18020476827 in words is "eighteen billion, twenty million, four hundred seventy-six thousand, eight hundred twenty-seven".