18616408865206 has 16 divisors (see below), whose sum is σ = 27948307795200. Its totient is φ = 9300307318848.

The previous prime is 18616408865203. The next prime is 18616408865209. The reversal of 18616408865206 is 60256880461681.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18616408865203) and next prime (18616408865209).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18616408865203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36205360 + ... + 36715948.

It is an arithmetic number, because the mean of its divisors is an integer number (1746769237200).

Almost surely, 2^{18616408865206} is an apocalyptic number.

18616408865206 is a deficient number, since it is larger than the sum of its proper divisors (9331898929994).

18616408865206 is a wasteful number, since it uses less digits than its factorization.

18616408865206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526023.

The product of its (nonzero) digits is 26542080, while the sum is 61.

The spelling of 18616408865206 in words is "eighteen trillion, six hundred sixteen billion, four hundred eight million, eight hundred sixty-five thousand, two hundred six".