82060621728 has 48 divisors (see below), whose sum is σ = 215489917440. Its totient is φ = 27343282176.

The previous prime is 82060621697. The next prime is 82060621771. The reversal of 82060621728 is 82712606028.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 82060621728.

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, 99201 + ... + 417087.

It is an arithmetic number, because the mean of its divisors is an integer number (4489373280).

Almost surely, 2^82060621728 is an apocalyptic number.

It is an amenable number.

82060621728 is an abundant number, since it is smaller than the sum of its proper divisors (133429295712).

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

82060621728 is a wasteful number, since it uses less digits than its factorization.

82060621728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320589 (or 320581 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 82060621728 in words is "eighty-two billion, sixty million, six hundred twenty-one thousand, seven hundred twenty-eight".