18399627437334 has 32 divisors (see below), whose sum is σ = 43232691043584. Its totient is φ = 5146748933280.

The previous prime is 18399627437333. The next prime is 18399627437413. The reversal of 18399627437334 is 43373472699381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18399627437333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10722392754 + ... + 10722394469.

It is an arithmetic number, because the mean of its divisors is an integer number (1351021595112).

Almost surely, 2^{18399627437334} is an apocalyptic number.

18399627437334 is an abundant number, since it is smaller than the sum of its proper divisors (24833063606250).

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

18399627437334 is a wasteful number, since it uses less digits than its factorization.

18399627437334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21444787252.

The product of its digits is 493807104, while the sum is 69.

The spelling of 18399627437334 in words is "eighteen trillion, three hundred ninety-nine billion, six hundred twenty-seven million, four hundred thirty-seven thousand, three hundred thirty-four".