82777450804 has 12 divisors (see below), whose sum is σ = 153381747204. Its totient is φ = 38954094464.

The previous prime is 82777450799. The next prime is 82777450829. The reversal of 82777450804 is 40805477728.

It can be written as a sum of positive squares in 2 ways, for example, as 53485812900 + 29291637904 = 231270^2 + 171148^2 .

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, 608657659 + ... + 608657794.

It is an arithmetic number, because the mean of its divisors is an integer number (12781812267).

Almost surely, 2^82777450804 is an apocalyptic number.

It is an amenable number.

82777450804 is a deficient number, since it is larger than the sum of its proper divisors (70604296400).

82777450804 is a wasteful number, since it uses less digits than its factorization.

82777450804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217315474 (or 1217315472 counting only the distinct ones).

The product of its (nonzero) digits is 3512320, while the sum is 52.

The spelling of 82777450804 in words is "eighty-two billion, seven hundred seventy-seven million, four hundred fifty thousand, eight hundred four".