18334666666669 has 4 divisors (see below), whose sum is σ = 18334693254844. Its totient is φ = 18334640078496.

The previous prime is 18334666666661. The next prime is 18334666666703. The reversal of 18334666666669 is 96666666643381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14188706904100 + 4145959762569 = 3766790^2 + 2036163^2 .

It is a cyclic number.

It is not a de Polignac number, because 18334666666669 - 2³ = 18334666666661 is a prime.

It is a super-2 number, since 2×18334666666669² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18334666666595 and 18334666666604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18334666666661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12231402 + ... + 13648315.

It is an arithmetic number, because the mean of its divisors is an integer number (4583673313711).

Almost surely, 2^{18334666666669} is an apocalyptic number.

It is an amenable number.

18334666666669 is a deficient number, since it is larger than the sum of its proper divisors (26588175).

18334666666669 is an equidigital number, since it uses as much as digits as its factorization.

18334666666669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26588174.

The product of its digits is 4353564672, while the sum is 76.

The spelling of 18334666666669 in words is "eighteen trillion, three hundred thirty-four billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-nine".