57305322820 has 12 divisors (see below), whose sum is σ = 120341177964. Its totient is φ = 22922129120.

The previous prime is 57305322791. The next prime is 57305322829. The reversal of 57305322820 is 2822350375.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43203285316 + 14102037504 = 207854^2 + 118752^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57305322820.

It is not an unprimeable number, because it can be changed into a prime (57305322829) by changing a digit.

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, 1432633051 + ... + 1432633090.

It is an arithmetic number, because the mean of its divisors is an integer number (10028431497).

Almost surely, 2^57305322820 is an apocalyptic number.

It is an amenable number.

57305322820 is an abundant number, since it is smaller than the sum of its proper divisors (63035855144).

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

57305322820 is a wasteful number, since it uses less digits than its factorization.

57305322820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865266150 (or 2865266148 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The spelling of 57305322820 in words is "fifty-seven billion, three hundred five million, three hundred twenty-two thousand, eight hundred twenty".