57665022220 has 48 divisors (see below), whose sum is σ = 130431839328. Its totient is φ = 21288407040.

The previous prime is 57665022197. The next prime is 57665022221. The reversal of 57665022220 is 2222056675.

It is a self number, because there is not a number n which added to its sum of digits gives 57665022220.

It is not an unprimeable number, because it can be changed into a prime (57665022221) 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 15 ways as a sum of consecutive naturals, for example, 2233827 + ... + 2259493.

It is an arithmetic number, because the mean of its divisors is an integer number (2717329986).

Almost surely, 2^57665022220 is an apocalyptic number.

It is an amenable number.

57665022220 is an abundant number, since it is smaller than the sum of its proper divisors (72766817108).

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

57665022220 is a wasteful number, since it uses less digits than its factorization.

57665022220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34330 (or 34328 counting only the distinct ones).

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

Adding to 57665022220 its reverse (2222056675), we get a palindrome (59887078895).

The spelling of 57665022220 in words is "fifty-seven billion, six hundred sixty-five million, twenty-two thousand, two hundred twenty".