16841993426 has 8 divisors (see below), whose sum is σ = 26134127820. Its totient is φ = 8130617488.

The previous prime is 16841993417. The next prime is 16841993431. The reversal of 16841993426 is 62439914861.

It can be written as a sum of positive squares in 2 ways, for example, as 16158223225 + 683770201 = 127115^2 + 26149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16841993426² (a number of 21 digits) contains 22 as substring.

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, 145189541 + ... + 145189656.

Almost surely, 2^16841993426 is an apocalyptic number.

16841993426 is a deficient number, since it is larger than the sum of its proper divisors (9292134394).

16841993426 is a wasteful number, since it uses less digits than its factorization.

16841993426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290379228.

The product of its digits is 2239488, while the sum is 53.

The spelling of 16841993426 in words is "sixteen billion, eight hundred forty-one million, nine hundred ninety-three thousand, four hundred twenty-six".