57444644443 has 2 divisors, whose sum is σ = 57444644444. Its totient is φ = 57444644442.

The previous prime is 57444644437. The next prime is 57444644489. The reversal of 57444644443 is 34444644475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57444644443 - 2³³ = 48854709851 is a prime.

It is not a weakly prime, because it can be changed into another prime (57444614443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28722322221 + 28722322222.

It is an arithmetic number, because the mean of its divisors is an integer number (28722322222).

Almost surely, 2^57444644443 is an apocalyptic number.

57444644443 is a deficient number, since it is larger than the sum of its proper divisors (1).

57444644443 is an equidigital number, since it uses as much as digits as its factorization.

57444644443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10321920, while the sum is 49.

The spelling of 57444644443 in words is "fifty-seven billion, four hundred forty-four million, six hundred forty-four thousand, four hundred forty-three".