82815533556 has 96 divisors (see below), whose sum is σ = 230516471808. Its totient is φ = 22625623680.

The previous prime is 82815533483. The next prime is 82815533569. The reversal of 82815533556 is 65533551828.

It is a junction number, because it is equal to n+sod(n) for n = 82815533499 and 82815533508.

It is a congruent number.

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, 9522346 + ... + 9531038.

It is an arithmetic number, because the mean of its divisors is an integer number (2401213248).

Almost surely, 2^82815533556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82815533556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115258235904).

82815533556 is an abundant number, since it is smaller than the sum of its proper divisors (147700938252).

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

82815533556 is a wasteful number, since it uses less digits than its factorization.

82815533556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13661 (or 13659 counting only the distinct ones).

The product of its digits is 4320000, while the sum is 51.

The spelling of 82815533556 in words is "eighty-two billion, eight hundred fifteen million, five hundred thirty-three thousand, five hundred fifty-six".