18271011370866 has 32 divisors (see below), whose sum is σ = 38897481355200. Its totient is φ = 5704963925760.

The previous prime is 18271011370861. The next prime is 18271011370867. The reversal of 18271011370866 is 66807311017281.

It is a super-6 number, since 6×18271011370866⁶ (a number of 81 digits) contains 666666 as substring.

It is not an unprimeable number, because it can be changed into a prime (18271011370861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900394515 + ... + 900414806.

It is an arithmetic number, because the mean of its divisors is an integer number (1215546292350).

Almost surely, 2^{18271011370866} is an apocalyptic number.

18271011370866 is an abundant number, since it is smaller than the sum of its proper divisors (20626469984334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18271011370866 is a wasteful number, since it uses less digits than its factorization.

18271011370866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800809434.

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 18271011370866 in words is "eighteen trillion, two hundred seventy-one billion, eleven million, three hundred seventy thousand, eight hundred sixty-six".