57191185349 has 2 divisors, whose sum is σ = 57191185350. Its totient is φ = 57191185348.

The previous prime is 57191185291. The next prime is 57191185351. The reversal of 57191185349 is 94358119175.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39593836324 + 17597349025 = 198982^2 + 132655^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57191185349 is a prime.

Together with 57191185351, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57191185349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57191185369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28595592674 + 28595592675.

It is an arithmetic number, because the mean of its divisors is an integer number (28595592675).

Almost surely, 2^57191185349 is an apocalyptic number.

It is an amenable number.

57191185349 is a deficient number, since it is larger than the sum of its proper divisors (1).

57191185349 is an equidigital number, since it uses as much as digits as its factorization.

57191185349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 53.

The spelling of 57191185349 in words is "fifty-seven billion, one hundred ninety-one million, one hundred eighty-five thousand, three hundred forty-nine".