2557428447943 has 2 divisors, whose sum is σ = 2557428447944. Its totient is φ = 2557428447942.

The previous prime is 2557428447929. The next prime is 2557428447949. The reversal of 2557428447943 is 3497448247552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2557428447943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557428447949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278714223971 + 1278714223972.

It is an arithmetic number, because the mean of its divisors is an integer number (1278714223972).

Almost surely, 2^{2557428447943} is an apocalyptic number.

2557428447943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557428447943 is an equidigital number, since it uses as much as digits as its factorization.

2557428447943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270950400, while the sum is 64.

The spelling of 2557428447943 in words is "two trillion, five hundred fifty-seven billion, four hundred twenty-eight million, four hundred forty-seven thousand, nine hundred forty-three".