82128782350 has 12 divisors (see below), whose sum is σ = 152759535264. Its totient is φ = 32851512920.

The previous prime is 82128782293. The next prime is 82128782381. The reversal of 82128782350 is 5328782128.

It is a self number, because there is not a number n which added to its sum of digits gives 82128782350.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 821287774 + ... + 821287873.

It is an arithmetic number, because the mean of its divisors is an integer number (12729961272).

Almost surely, 2^82128782350 is an apocalyptic number.

82128782350 is a deficient number, since it is larger than the sum of its proper divisors (70630752914).

82128782350 is a wasteful number, since it uses less digits than its factorization.

82128782350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642575659 (or 1642575654 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The spelling of 82128782350 in words is "eighty-two billion, one hundred twenty-eight million, seven hundred eighty-two thousand, three hundred fifty".