18163506345330 has 64 divisors (see below), whose sum is σ = 44619091532928. Its totient is φ = 4729591695360.

The previous prime is 18163506345317. The next prime is 18163506345331. The reversal of 18163506345330 is 3354360536181.

It is a self number, because there is not a number n which added to its sum of digits gives 18163506345330.

It is not an unprimeable number, because it can be changed into a prime (18163506345331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2430562 + ... + 6498818.

It is an arithmetic number, because the mean of its divisors is an integer number (697173305202).

Almost surely, 2^{18163506345330} is an apocalyptic number.

18163506345330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18163506345330 is an abundant number, since it is smaller than the sum of its proper divisors (26455585187598).

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

18163506345330 is a wasteful number, since it uses less digits than its factorization.

18163506345330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071771.

The product of its (nonzero) digits is 2332800, while the sum is 48.

The spelling of 18163506345330 in words is "eighteen trillion, one hundred sixty-three billion, five hundred six million, three hundred forty-five thousand, three hundred thirty".