16318939774976 has 120 divisors (see below), whose sum is σ = 35462848565760. Its totient is φ = 7480664064000.

The previous prime is 16318939774967. The next prime is 16318939775029. The reversal of 16318939774976 is 67947793981361.

It is a self number, because there is not a number n which added to its sum of digits gives 16318939774976.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8804651 + ... + 10495701.

It is an arithmetic number, because the mean of its divisors is an integer number (295523738048).

Almost surely, 2^{16318939774976} is an apocalyptic number.

16318939774976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16318939774976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17731424282880).

16318939774976 is an abundant number, since it is smaller than the sum of its proper divisors (19143908790784).

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

16318939774976 is an equidigital number, since it uses as much as digits as its factorization.

16318939774976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691129 (or 1691103 counting only the distinct ones).

The product of its digits is 2592487296, while the sum is 80.

The spelling of 16318939774976 in words is "sixteen trillion, three hundred eighteen billion, nine hundred thirty-nine million, seven hundred seventy-four thousand, nine hundred seventy-six".