82390220899 has 32 divisors (see below), whose sum is σ = 99638293376. Its totient is φ = 66658360320.

The previous prime is 82390220879. The next prime is 82390220909. The reversal of 82390220899 is 99802209328.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82390220899 - 2⁵ = 82390220867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82390220819) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1117609 + ... + 1189045.

It is an arithmetic number, because the mean of its divisors is an integer number (3113696668).

Almost surely, 2^82390220899 is an apocalyptic number.

82390220899 is a deficient number, since it is larger than the sum of its proper divisors (17248072477).

82390220899 is a wasteful number, since it uses less digits than its factorization.

82390220899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71615.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The spelling of 82390220899 in words is "eighty-two billion, three hundred ninety million, two hundred twenty thousand, eight hundred ninety-nine".