82079477728 has 48 divisors (see below), whose sum is σ = 175586019840. Its totient is φ = 37625558400.

The previous prime is 82079477681. The next prime is 82079477801. The reversal of 82079477728 is 82777497028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2158558 + ... + 2196253.

It is an arithmetic number, because the mean of its divisors is an integer number (3658042080).

Almost surely, 2^82079477728 is an apocalyptic number.

It is an amenable number.

82079477728 is an abundant number, since it is smaller than the sum of its proper divisors (93506542112).

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

82079477728 is a wasteful number, since it uses less digits than its factorization.

82079477728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354871 (or 4354863 counting only the distinct ones).

The product of its (nonzero) digits is 22127616, while the sum is 61.

The spelling of 82079477728 in words is "eighty-two billion, seventy-nine million, four hundred seventy-seven thousand, seven hundred twenty-eight".