18466366366481 has 8 divisors (see below), whose sum is σ = 20159928671328. Its totient is φ = 16775271016000.

The previous prime is 18466366366477. The next prime is 18466366366489.

18466366366481 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18466366366481 - 2² = 18466366366477 is a prime.

It is a super-2 number, since 2×18466366366481² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18466366366489) 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, 616722935 + ... + 616752876.

It is an arithmetic number, because the mean of its divisors is an integer number (2519991083916).

Almost surely, 2^{18466366366481} is an apocalyptic number.

18466366366481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18466366366481 is a deficient number, since it is larger than the sum of its proper divisors (1693562304847).

18466366366481 is a wasteful number, since it uses less digits than its factorization.

18466366366481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233477183.

The product of its digits is 429981696, while the sum is 68.

The spelling of 18466366366481 in words is "eighteen trillion, four hundred sixty-six billion, three hundred sixty-six million, three hundred sixty-six thousand, four hundred eighty-one".