82505530428 has 12 divisors (see below), whose sum is σ = 192512904360. Its totient is φ = 27501843472.

The previous prime is 82505530427. The next prime is 82505530433. The reversal of 82505530428 is 82403550528.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 82505530428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82505530423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3437730423 + ... + 3437730446.

It is an arithmetic number, because the mean of its divisors is an integer number (16042742030).

Almost surely, 2^82505530428 is an apocalyptic number.

It is an amenable number.

82505530428 is an abundant number, since it is smaller than the sum of its proper divisors (110007373932).

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

82505530428 is a wasteful number, since it uses less digits than its factorization.

82505530428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6875460876 (or 6875460874 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 42.

The spelling of 82505530428 in words is "eighty-two billion, five hundred five million, five hundred thirty thousand, four hundred twenty-eight".