82199208840 has 64 divisors (see below), whose sum is σ = 281825861760. Its totient is φ = 18788390400.

The previous prime is 82199208797. The next prime is 82199208863. The reversal of 82199208840 is 4880299128.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48927261 + ... + 48928940.

It is an arithmetic number, because the mean of its divisors is an integer number (4403529090).

Almost surely, 2^82199208840 is an apocalyptic number.

It is an amenable number.

82199208840 is an abundant number, since it is smaller than the sum of its proper divisors (199626652920).

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

82199208840 is a wasteful number, since it uses less digits than its factorization.

82199208840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97856222 (or 97856218 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The spelling of 82199208840 in words is "eighty-two billion, one hundred ninety-nine million, two hundred eight thousand, eight hundred forty".