82345455208820 has 24 divisors (see below), whose sum is σ = 182026795725600. Its totient is φ = 31204593552672.

The previous prime is 82345455208799. The next prime is 82345455208859. The reversal of 82345455208820 is 2880255454328.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108349282790 + ... + 108349283549.

It is an arithmetic number, because the mean of its divisors is an integer number (7584449821900).

Almost surely, 2^{82345455208820} is an apocalyptic number.

It is an amenable number.

82345455208820 is an abundant number, since it is smaller than the sum of its proper divisors (99681340516780).

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

82345455208820 is a wasteful number, since it uses less digits than its factorization.

82345455208820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216698566367 (or 216698566365 counting only the distinct ones).

The product of its (nonzero) digits is 24576000, while the sum is 56.

The spelling of 82345455208820 in words is "eighty-two trillion, three hundred forty-five billion, four hundred fifty-five million, two hundred eight thousand, eight hundred twenty".