16812716428318 has 4 divisors (see below), whose sum is σ = 25219074642480. Its totient is φ = 8406358214158.

The previous prime is 16812716428307. The next prime is 16812716428337. The reversal of 16812716428318 is 81382461721861.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4203179107078 + ... + 4203179107081.

It is an arithmetic number, because the mean of its divisors is an integer number (6304768660620).

Almost surely, 2^{16812716428318} is an apocalyptic number.

16812716428318 is a deficient number, since it is larger than the sum of its proper divisors (8406358214162).

16812716428318 is an equidigital number, since it uses as much as digits as its factorization.

16812716428318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406358214161.

The product of its digits is 6193152, while the sum is 58.

The spelling of 16812716428318 in words is "sixteen trillion, eight hundred twelve billion, seven hundred sixteen million, four hundred twenty-eight thousand, three hundred eighteen".