16818329445 has 32 divisors (see below), whose sum is σ = 28088024832. Its totient is φ = 8577119232.

The previous prime is 16818329441. The next prime is 16818329477. The reversal of 16818329445 is 54492381861.

It is not a de Polignac number, because 16818329445 - 2² = 16818329441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16818329441) 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, 1594509 + ... + 1605021.

It is an arithmetic number, because the mean of its divisors is an integer number (877750776).

Almost surely, 2^16818329445 is an apocalyptic number.

16818329445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16818329445 is a deficient number, since it is larger than the sum of its proper divisors (11269695387).

16818329445 is a wasteful number, since it uses less digits than its factorization.

16818329445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15181.

The product of its digits is 1658880, while the sum is 51.

The spelling of 16818329445 in words is "sixteen billion, eight hundred eighteen million, three hundred twenty-nine thousand, four hundred forty-five".