82489796780 has 24 divisors (see below), whose sum is σ = 176497039152. Its totient is φ = 32373353792.

The previous prime is 82489796771. The next prime is 82489796803. The reversal of 82489796780 is 8769798428.

It is a self number, because there is not a number n which added to its sum of digits gives 82489796780.

It is an unprimeable number.

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, 38909222 + ... + 38911341.

It is an arithmetic number, because the mean of its divisors is an integer number (7354043298).

Almost surely, 2^82489796780 is an apocalyptic number.

It is an amenable number.

82489796780 is an abundant number, since it is smaller than the sum of its proper divisors (94007242372).

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

82489796780 is a wasteful number, since it uses less digits than its factorization.

82489796780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77820625 (or 77820623 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 68.

The spelling of 82489796780 in words is "eighty-two billion, four hundred eighty-nine million, seven hundred ninety-six thousand, seven hundred eighty".