16518664129345 has 32 divisors (see below), whose sum is σ = 22995080248320. Its totient is φ = 11157041088000.

The previous prime is 16518664129307. The next prime is 16518664129349. The reversal of 16518664129345 is 54392146681561.

It is not a de Polignac number, because 16518664129345 - 2⁷ = 16518664129217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16518664129349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2385610 + ... + 6223219.

It is an arithmetic number, because the mean of its divisors is an integer number (718596257760).

Almost surely, 2^{16518664129345} is an apocalyptic number.

It is an amenable number.

16518664129345 is a deficient number, since it is larger than the sum of its proper divisors (6476416118975).

16518664129345 is an equidigital number, since it uses as much as digits as its factorization.

16518664129345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8609665.

The product of its digits is 37324800, while the sum is 61.

The spelling of 16518664129345 in words is "sixteen trillion, five hundred eighteen billion, six hundred sixty-four million, one hundred twenty-nine thousand, three hundred forty-five".