57724493569949 has 2 divisors, whose sum is σ = 57724493569950. Its totient is φ = 57724493569948.

The previous prime is 57724493569943. The next prime is 57724493570027. The reversal of 57724493569949 is 94996539442775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52473145507225 + 5251348062724 = 7243835^2 + 2291582^2 .

It is a cyclic number.

It is not a de Polignac number, because 57724493569949 - 2⁴ = 57724493569933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57724493569943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28862246784974 + 28862246784975.

It is an arithmetic number, because the mean of its divisors is an integer number (28862246784975).

Almost surely, 2^{57724493569949} is an apocalyptic number.

It is an amenable number.

57724493569949 is a deficient number, since it is larger than the sum of its proper divisors (1).

57724493569949 is an equidigital number, since it uses as much as digits as its factorization.

57724493569949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18517766400, while the sum is 83.

The spelling of 57724493569949 in words is "fifty-seven trillion, seven hundred twenty-four billion, four hundred ninety-three million, five hundred sixty-nine thousand, nine hundred forty-nine".