82856865828 has 48 divisors (see below), whose sum is σ = 223314767424. Its totient is φ = 23631191040.

The previous prime is 82856865809. The next prime is 82856865853.

82856865828 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

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, 18459625 + ... + 18464112.

It is an arithmetic number, because the mean of its divisors is an integer number (4652390988).

Almost surely, 2^82856865828 is an apocalyptic number.

It is an amenable number.

82856865828 is an abundant number, since it is smaller than the sum of its proper divisors (140457901596).

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

82856865828 is a wasteful number, since it uses less digits than its factorization.

82856865828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36923772 (or 36923770 counting only the distinct ones).

The product of its digits is 117964800, while the sum is 66.

The spelling of 82856865828 in words is "eighty-two billion, eight hundred fifty-six million, eight hundred sixty-five thousand, eight hundred twenty-eight".