16422612905 has 4 divisors (see below), whose sum is σ = 19707135492. Its totient is φ = 13138090320.

The previous prime is 16422612859. The next prime is 16422612929. The reversal of 16422612905 is 50921622461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50921622461 = 317 ⋅160636033.

It can be written as a sum of positive squares in 2 ways, for example, as 12391251856 + 4031361049 = 111316^2 + 63493^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16422612905 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1642261286 + ... + 1642261295.

It is an arithmetic number, because the mean of its divisors is an integer number (4926783873).

Almost surely, 2^16422612905 is an apocalyptic number.

It is an amenable number.

16422612905 is a deficient number, since it is larger than the sum of its proper divisors (3284522587).

16422612905 is an equidigital number, since it uses as much as digits as its factorization.

16422612905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3284522586.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 16422612905 in words is "sixteen billion, four hundred twenty-two million, six hundred twelve thousand, nine hundred five".