16856228958 has 32 divisors (see below), whose sum is σ = 34347921696. Its totient is φ = 5513614848.

The previous prime is 16856228957. The next prime is 16856228971. The reversal of 16856228958 is 85982265861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16856228957) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11391 + ... + 183962.

It is an arithmetic number, because the mean of its divisors is an integer number (1073372553).

Almost surely, 2^16856228958 is an apocalyptic number.

16856228958 is an abundant number, since it is smaller than the sum of its proper divisors (17491692738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16856228958 is a wasteful number, since it uses less digits than its factorization.

16856228958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195628.

The product of its digits is 16588800, while the sum is 60.

The spelling of 16856228958 in words is "sixteen billion, eight hundred fifty-six million, two hundred twenty-eight thousand, nine hundred fifty-eight".