57491484389 has 2 divisors, whose sum is σ = 57491484390. Its totient is φ = 57491484388.

The previous prime is 57491484373. The next prime is 57491484439. The reversal of 57491484389 is 98348419475.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46373469025 + 11118015364 = 215345^2 + 105442^2 .

It is a cyclic number.

It is not a de Polignac number, because 57491484389 - 2⁴ = 57491484373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57491484329) 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, 28745742194 + 28745742195.

It is an arithmetic number, because the mean of its divisors is an integer number (28745742195).

Almost surely, 2^57491484389 is an apocalyptic number.

It is an amenable number.

57491484389 is a deficient number, since it is larger than the sum of its proper divisors (1).

57491484389 is an equidigital number, since it uses as much as digits as its factorization.

57491484389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34836480, while the sum is 62.

The spelling of 57491484389 in words is "fifty-seven billion, four hundred ninety-one million, four hundred eighty-four thousand, three hundred eighty-nine".