82878393808 has 60 divisors (see below), whose sum is σ = 186889963872. Its totient is φ = 35500973760.

The previous prime is 82878393797. The next prime is 82878393823. The reversal of 82878393808 is 80839387828.

It is a self number, because there is not a number n which added to its sum of digits gives 82878393808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1550341 + ... + 1602907.

Almost surely, 2^82878393808 is an apocalyptic number.

It is an amenable number.

82878393808 is an abundant number, since it is smaller than the sum of its proper divisors (104011570064).

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

82878393808 is a wasteful number, since it uses less digits than its factorization.

82878393808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54600 (or 54587 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 64.

The spelling of 82878393808 in words is "eighty-two billion, eight hundred seventy-eight million, three hundred ninety-three thousand, eight hundred eight".