57055044644 has 24 divisors (see below), whose sum is σ = 107538482688. Its totient is φ = 26330240160.

The previous prime is 57055044637. The next prime is 57055044647. The reversal of 57055044644 is 44644055075.

It is a junction number, because it is equal to n+sod(n) for n = 57055044595 and 57055044604.

It is not an unprimeable number, because it can be changed into a prime (57055044647) 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 7 ways as a sum of consecutive naturals, for example, 468989 + ... + 577979.

It is an arithmetic number, because the mean of its divisors is an integer number (4480770112).

Almost surely, 2^57055044644 is an apocalyptic number.

It is an amenable number.

57055044644 is a deficient number, since it is larger than the sum of its proper divisors (50483438044).

57055044644 is a wasteful number, since it uses less digits than its factorization.

57055044644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119075 (or 119073 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 44.

The spelling of 57055044644 in words is "fifty-seven billion, fifty-five million, forty-four thousand, six hundred forty-four".