18217066486 has 16 divisors (see below), whose sum is σ = 28229281920. Its totient is φ = 8807768640.

The previous prime is 18217066477. The next prime is 18217066493. The reversal of 18217066486 is 68466071281.

It is a super-2 number, since 2×18217066486² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35871 + ... + 194218.

It is an arithmetic number, because the mean of its divisors is an integer number (1764330120).

Almost surely, 2^18217066486 is an apocalyptic number.

18217066486 is a deficient number, since it is larger than the sum of its proper divisors (10012215434).

18217066486 is a wasteful number, since it uses less digits than its factorization.

18217066486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231399.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 18217066486 in words is "eighteen billion, two hundred seventeen million, sixty-six thousand, four hundred eighty-six".