18340005040542 has 32 divisors (see below), whose sum is σ = 40756306586400. Its totient is φ = 6113224039104.

The previous prime is 18340005040537. The next prime is 18340005040543. The reversal of 18340005040542 is 24504050004381.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18340005040497 and 18340005040506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18340005040543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53023 + ... + 6056634.

It is an arithmetic number, because the mean of its divisors is an integer number (1273634580825).

Almost surely, 2^{18340005040542} is an apocalyptic number.

18340005040542 is an abundant number, since it is smaller than the sum of its proper divisors (22416301545858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18340005040542 is a wasteful number, since it uses less digits than its factorization.

18340005040542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6165257 (or 6165251 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

The spelling of 18340005040542 in words is "eighteen trillion, three hundred forty billion, five million, forty thousand, five hundred forty-two".