18102234433441 has 4 divisors (see below), whose sum is σ = 18102243633300. Its totient is φ = 18102225233584.

The previous prime is 18102234433429. The next prime is 18102234433453. The reversal of 18102234433441 is 14433443220181.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (18102234433429) and next prime (18102234433453).

It can be written as a sum of positive squares in 2 ways, for example, as 2798607793216 + 15303626640225 = 1672904^2 + 3911985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18102234433441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18102234433394 and 18102234433403.

It is not an unprimeable number, because it can be changed into a prime (18102234431441) 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, 322726 + ... + 6025663.

It is an arithmetic number, because the mean of its divisors is an integer number (4525560908325).

Almost surely, 2^{18102234433441} is an apocalyptic number.

It is an amenable number.

18102234433441 is a deficient number, since it is larger than the sum of its proper divisors (9199859).

18102234433441 is an equidigital number, since it uses as much as digits as its factorization.

18102234433441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9199858.

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 18102234433441 in words is "eighteen trillion, one hundred two billion, two hundred thirty-four million, four hundred thirty-three thousand, four hundred forty-one".