16798040851 has 4 divisors (see below), whose sum is σ = 17114985072. Its totient is φ = 16481096632.

The previous prime is 16798040849. The next prime is 16798040899. The reversal of 16798040851 is 15804089761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15804089761 = 3389 ⋅4663349.

It is a cyclic number.

It is not a de Polignac number, because 16798040851 - 2¹ = 16798040849 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16798040795 and 16798040804.

It is not an unprimeable number, because it can be changed into a prime (16798040251) 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 3 ways as a sum of consecutive naturals, for example, 158472031 + ... + 158472136.

It is an arithmetic number, because the mean of its divisors is an integer number (4278746268).

Almost surely, 2^16798040851 is an apocalyptic number.

16798040851 is a deficient number, since it is larger than the sum of its proper divisors (316944221).

16798040851 is an equidigital number, since it uses as much as digits as its factorization.

16798040851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316944220.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 16798040851 in words is "sixteen billion, seven hundred ninety-eight million, forty thousand, eight hundred fifty-one".