83191939008 has 224 divisors, whose sum is σ = 239320181760. Its totient is φ = 25442242560.

The previous prime is 83191938959. The next prime is 83191939027. The reversal of 83191939008 is 80093919138.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8853993 + ... + 8863383.

Almost surely, 2^83191939008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83191939008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119660090880).

83191939008 is an abundant number, since it is smaller than the sum of its proper divisors (156128242752).

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

83191939008 is a wasteful number, since it uses less digits than its factorization.

83191939008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9515 (or 9505 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 51.

The spelling of 83191939008 in words is "eighty-three billion, one hundred ninety-one million, nine hundred thirty-nine thousand, eight".