18018541458399 has 8 divisors (see below), whose sum is σ = 24050091242880. Its totient is φ = 11999676323096.

The previous prime is 18018541458397. The next prime is 18018541458469. The reversal of 18018541458399 is 99385414581081.

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 18018541458399 - 2¹ = 18018541458397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18018541458397) 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, 3171158979 + ... + 3171164660.

It is an arithmetic number, because the mean of its divisors is an integer number (3006261405360).

Almost surely, 2^{18018541458399} is an apocalyptic number.

18018541458399 is a deficient number, since it is larger than the sum of its proper divisors (6031549784481).

18018541458399 is an equidigital number, since it uses as much as digits as its factorization.

18018541458399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6342324589.

The product of its (nonzero) digits is 49766400, while the sum is 66.

The spelling of 18018541458399 in words is "eighteen trillion, eighteen billion, five hundred forty-one million, four hundred fifty-eight thousand, three hundred ninety-nine".