57144605549 has 2 divisors, whose sum is σ = 57144605550. Its totient is φ = 57144605548.

The previous prime is 57144605543. The next prime is 57144605699. The reversal of 57144605549 is 94550644175.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33066876649 + 24077728900 = 181843^2 + 155170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57144605549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57144605497 and 57144605506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57144605543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28572302774 + 28572302775.

It is an arithmetic number, because the mean of its divisors is an integer number (28572302775).

Almost surely, 2^57144605549 is an apocalyptic number.

It is an amenable number.

57144605549 is a deficient number, since it is larger than the sum of its proper divisors (1).

57144605549 is an equidigital number, since it uses as much as digits as its factorization.

57144605549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 57144605549 in words is "fifty-seven billion, one hundred forty-four million, six hundred five thousand, five hundred forty-nine".