16696128458 has 4 divisors (see below), whose sum is σ = 25044192690. Its totient is φ = 8348064228.

The previous prime is 16696128433. The next prime is 16696128517. The reversal of 16696128458 is 85482169661.

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., 11353541809 + 5342586649 = 106553^2 + 73093^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4174032113 + ... + 4174032116.

Almost surely, 2^16696128458 is an apocalyptic number.

16696128458 is a deficient number, since it is larger than the sum of its proper divisors (8348064232).

16696128458 is an equidigital number, since it uses as much as digits as its factorization.

16696128458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8348064231.

The product of its digits is 4976640, while the sum is 56.

The spelling of 16696128458 in words is "sixteen billion, six hundred ninety-six million, one hundred twenty-eight thousand, four hundred fifty-eight".