18280605499668 has 36 divisors (see below), whose sum is σ = 46898999521920. Its totient is φ = 6002586879696.

The previous prime is 18280605499619. The next prime is 18280605499691. The reversal of 18280605499668 is 86699450608281.

18280605499668 is a `hidden beast` number, since 1 + 8 + 2 + 8 + 0 + 605 + 4 + 9 + 9 + 6 + 6 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×18280605499668² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18280605499596 and 18280605499605.

It is a congruent number.

It is an unprimeable number.

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, 3789509508 + ... + 3789514331.

It is an arithmetic number, because the mean of its divisors is an integer number (1302749986720).

Almost surely, 2^{18280605499668} is an apocalyptic number.

18280605499668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18280605499668 is an abundant number, since it is smaller than the sum of its proper divisors (28618394022252).

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

18280605499668 is a wasteful number, since it uses less digits than its factorization.

18280605499668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7579023916 (or 7579023911 counting only the distinct ones).

The product of its (nonzero) digits is 358318080, while the sum is 72.

The spelling of 18280605499668 in words is "eighteen trillion, two hundred eighty billion, six hundred five million, four hundred ninety-nine thousand, six hundred sixty-eight".