82281887128 has 16 divisors (see below), whose sum is σ = 176318329680. Its totient is φ = 35263665888.

The previous prime is 82281887123. The next prime is 82281887159. The reversal of 82281887128 is 82178818228.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82281887123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734659651 + ... + 734659762.

It is an arithmetic number, because the mean of its divisors is an integer number (11019895605).

Almost surely, 2^82281887128 is an apocalyptic number.

It is an amenable number.

82281887128 is an abundant number, since it is smaller than the sum of its proper divisors (94036442552).

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

82281887128 is a wasteful number, since it uses less digits than its factorization.

82281887128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469319426 (or 1469319422 counting only the distinct ones).

The product of its digits is 1835008, while the sum is 55.

The spelling of 82281887128 in words is "eighty-two billion, two hundred eighty-one million, eight hundred eighty-seven thousand, one hundred twenty-eight".