57731144447 has 2 divisors, whose sum is σ = 57731144448. Its totient is φ = 57731144446.

The previous prime is 57731144369. The next prime is 57731144461. The reversal of 57731144447 is 74444113775.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57731144447 - 2¹⁰ = 57731143423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57731144467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28865572223 + 28865572224.

It is an arithmetic number, because the mean of its divisors is an integer number (28865572224).

Almost surely, 2^57731144447 is an apocalyptic number.

57731144447 is a deficient number, since it is larger than the sum of its proper divisors (1).

57731144447 is an equidigital number, since it uses as much as digits as its factorization.

57731144447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1317120, while the sum is 47.

The spelling of 57731144447 in words is "fifty-seven billion, seven hundred thirty-one million, one hundred forty-four thousand, four hundred forty-seven".