57143828491 has 2 divisors, whose sum is σ = 57143828492. Its totient is φ = 57143828490.

The previous prime is 57143828473. The next prime is 57143828527. The reversal of 57143828491 is 19482834175.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57143828491 - 2²⁹ = 56606957579 is a prime.

It is not a weakly prime, because it can be changed into another prime (57143828411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28571914245 + 28571914246.

It is an arithmetic number, because the mean of its divisors is an integer number (28571914246).

Almost surely, 2^57143828491 is an apocalyptic number.

57143828491 is a deficient number, since it is larger than the sum of its proper divisors (1).

57143828491 is an equidigital number, since it uses as much as digits as its factorization.

57143828491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 52.

The spelling of 57143828491 in words is "fifty-seven billion, one hundred forty-three million, eight hundred twenty-eight thousand, four hundred ninety-one".