82020764445 has 32 divisors (see below), whose sum is σ = 132483600000. Its totient is φ = 43329502464.

The previous prime is 82020764443. The next prime is 82020764513. The reversal of 82020764445 is 54446702028.

It is a happy number.

It is not a de Polignac number, because 82020764445 - 2¹ = 82020764443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82020764397 and 82020764406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82020764443) 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, 639306 + ... + 756804.

It is an arithmetic number, because the mean of its divisors is an integer number (4140112500).

Almost surely, 2^82020764445 is an apocalyptic number.

It is an amenable number.

82020764445 is a deficient number, since it is larger than the sum of its proper divisors (50462835555).

82020764445 is a wasteful number, since it uses less digits than its factorization.

82020764445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117949.

The product of its (nonzero) digits is 430080, while the sum is 42.

The spelling of 82020764445 in words is "eighty-two billion, twenty million, seven hundred sixty-four thousand, four hundred forty-five".