82021028658 has 16 divisors (see below), whose sum is σ = 164075249856. Its totient is φ = 27334810800.

The previous prime is 82021028653. The next prime is 82021028659. The reversal of 82021028658 is 85682012028.

It is not an unprimeable number, because it can be changed into a prime (82021028653) 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 7 ways as a sum of consecutive naturals, for example, 1350841 + ... + 1410252.

It is an arithmetic number, because the mean of its divisors is an integer number (10254703116).

Almost surely, 2^82021028658 is an apocalyptic number.

82021028658 is an abundant number, since it is smaller than the sum of its proper divisors (82054221198).

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

82021028658 is a wasteful number, since it uses less digits than its factorization.

82021028658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766049.

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 82021028658 in words is "eighty-two billion, twenty-one million, twenty-eight thousand, six hundred fifty-eight".