1818553216086 has 32 divisors (see below), whose sum is σ = 4043300966400. Its totient is φ = 605873665800.

The previous prime is 1818553216061. The next prime is 1818553216091. The reversal of 1818553216086 is 6806123558181.

1818553216086 is a `hidden beast` number, since 1 + 8 + 1 + 8 + 5 + 5 + 3 + 21 + 608 + 6 = 666.

It is a super-3 number, since 3×1818553216086³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8525326 + ... + 8736033.

It is an arithmetic number, because the mean of its divisors is an integer number (126353155200).

Almost surely, 2^{1818553216086} is an apocalyptic number.

1818553216086 is an abundant number, since it is smaller than the sum of its proper divisors (2224747750314).

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

1818553216086 is a wasteful number, since it uses less digits than its factorization.

1818553216086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17263321 (or 17263315 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 1818553216086 in words is "one trillion, eight hundred eighteen billion, five hundred fifty-three million, two hundred sixteen thousand, eighty-six".