57220851844 has 12 divisors (see below), whose sum is σ = 107839297804. Its totient is φ = 26409623904.

The previous prime is 57220851841. The next prime is 57220851881. The reversal of 57220851844 is 44815802275.

It can be written as a sum of positive squares in 2 ways, for example, as 29776953600 + 27443898244 = 172560^2 + 165662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57220851794 and 57220851803.

It is not an unprimeable number, because it can be changed into a prime (57220851841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550200447 + ... + 550200550.

Almost surely, 2^57220851844 is an apocalyptic number.

It is an amenable number.

57220851844 is a deficient number, since it is larger than the sum of its proper divisors (50618445960).

57220851844 is a wasteful number, since it uses less digits than its factorization.

57220851844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100401014 (or 1100401012 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 46.

The spelling of 57220851844 in words is "fifty-seven billion, two hundred twenty million, eight hundred fifty-one thousand, eight hundred forty-four".