16422689637 has 12 divisors (see below), whose sum is σ = 23724462060. Its totient is φ = 10947167808.

The previous prime is 16422689599. The next prime is 16422689677. The reversal of 16422689637 is 73698622461.

It can be written as a sum of positive squares in 2 ways, for example, as 15678545796 + 744143841 = 125214^2 + 27279^2 .

It is not a de Polignac number, because 16422689637 - 2⁶ = 16422689573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16422689677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23712 + ... + 182777.

It is an arithmetic number, because the mean of its divisors is an integer number (1977038505).

Almost surely, 2^16422689637 is an apocalyptic number.

It is an amenable number.

16422689637 is a deficient number, since it is larger than the sum of its proper divisors (7301772423).

16422689637 is a wasteful number, since it uses less digits than its factorization.

16422689637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215332 (or 215329 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 54.

The spelling of 16422689637 in words is "sixteen billion, four hundred twenty-two million, six hundred eighty-nine thousand, six hundred thirty-seven".