82272977646 has 8 divisors (see below), whose sum is σ = 164545955304. Its totient is φ = 27424325880.

The previous prime is 82272977621. The next prime is 82272977681. The reversal of 82272977646 is 64677927228.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

82272977646 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 82272977646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6856081465 + ... + 6856081476.

It is an arithmetic number, because the mean of its divisors is an integer number (20568244413).

Almost surely, 2^82272977646 is an apocalyptic number.

82272977646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

82272977646 is a wasteful number, since it uses less digits than its factorization.

82272977646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13712162946.

The product of its digits is 28449792, while the sum is 60.

The spelling of 82272977646 in words is "eighty-two billion, two hundred seventy-two million, nine hundred seventy-seven thousand, six hundred forty-six".