83698928640 has 352 divisors, whose sum is σ = 307061790720. Its totient is φ = 21598617600.

The previous prime is 83698928639. The next prime is 83698928723. The reversal of 83698928640 is 4682989638.

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, 4275675 + ... + 4295205.

Almost surely, 2^83698928640 is an apocalyptic number.

83698928640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83698928640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153530895360).

83698928640 is an abundant number, since it is smaller than the sum of its proper divisors (223362862080).

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

83698928640 is a wasteful number, since it uses less digits than its factorization.

83698928640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19596 (or 19572 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 83698928640 in words is "eighty-three billion, six hundred ninety-eight million, nine hundred twenty-eight thousand, six hundred forty".