83128044686 has 16 divisors (see below), whose sum is σ = 126616374720. Its totient is φ = 40926462720.

The previous prime is 83128044683. The next prime is 83128044733. The reversal of 83128044686 is 68644082138.

It is a happy number.

It is a super-2 number, since 2×83128044686² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83128044683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 926006 + ... + 1011801.

It is an arithmetic number, because the mean of its divisors is an integer number (7913523420).

Almost surely, 2^83128044686 is an apocalyptic number.

83128044686 is a deficient number, since it is larger than the sum of its proper divisors (43488330034).

83128044686 is a wasteful number, since it uses less digits than its factorization.

83128044686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938139.

The product of its (nonzero) digits is 1769472, while the sum is 50.

The spelling of 83128044686 in words is "eighty-three billion, one hundred twenty-eight million, forty-four thousand, six hundred eighty-six".