16966789426 has 4 divisors (see below), whose sum is σ = 25450184142. Its totient is φ = 8483394712.

The previous prime is 16966789417. The next prime is 16966789439. The reversal of 16966789426 is 62498766961.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 8761147201 + 8205642225 = 93601^2 + 90585^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4241697355 + ... + 4241697358.

Almost surely, 2^16966789426 is an apocalyptic number.

16966789426 is a deficient number, since it is larger than the sum of its proper divisors (8483394716).

16966789426 is an equidigital number, since it uses as much as digits as its factorization.

16966789426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8483394715.

The product of its digits is 47029248, while the sum is 64.

The spelling of 16966789426 in words is "sixteen billion, nine hundred sixty-six million, seven hundred eighty-nine thousand, four hundred twenty-six".