82505782758 has 64 divisors (see below), whose sum is σ = 196979069952. Its totient is φ = 22525810560.

The previous prime is 82505782741. The next prime is 82505782811. The reversal of 82505782758 is 85728750528.

It is a junction number, because it is equal to n+sod(n) for n = 82505782698 and 82505782707.

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, 944460 + ... + 1028112.

It is an arithmetic number, because the mean of its divisors is an integer number (3077797968).

Almost surely, 2^82505782758 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82505782758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98489534976).

82505782758 is an abundant number, since it is smaller than the sum of its proper divisors (114473287194).

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

82505782758 is a wasteful number, since it uses less digits than its factorization.

82505782758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84709.

The product of its (nonzero) digits is 12544000, while the sum is 57.

The spelling of 82505782758 in words is "eighty-two billion, five hundred five million, seven hundred eighty-two thousand, seven hundred fifty-eight".