18426266262481 has 16 divisors (see below), whose sum is σ = 24182112936960. Its totient is φ = 13602438524880.

The previous prime is 18426266262433. The next prime is 18426266262493.

18426266262481 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 18426266262481 - 2⁹ = 18426266261969 is a prime.

It is a super-2 number, since 2×18426266262481² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18426266262181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6297423781 + ... + 6297426706.

It is an arithmetic number, because the mean of its divisors is an integer number (1511382058560).

Almost surely, 2^{18426266262481} is an apocalyptic number.

18426266262481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18426266262481 is a deficient number, since it is larger than the sum of its proper divisors (5755846674479).

18426266262481 is a wasteful number, since it uses less digits than its factorization.

18426266262481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12594850524.

The product of its digits is 21233664, while the sum is 58.

The spelling of 18426266262481 in words is "eighteen trillion, four hundred twenty-six billion, two hundred sixty-six million, two hundred sixty-two thousand, four hundred eighty-one".