57405686449 has 2 divisors, whose sum is σ = 57405686450. Its totient is φ = 57405686448.

The previous prime is 57405686341. The next prime is 57405686467. The reversal of 57405686449 is 94468650475.

57405686449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40002800049 + 17402886400 = 200007^2 + 131920^2 .

It is a cyclic number.

It is not a de Polignac number, because 57405686449 - 2¹⁵ = 57405653681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57405686393 and 57405686402.

It is not a weakly prime, because it can be changed into another prime (57405686489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28702843224 + 28702843225.

It is an arithmetic number, because the mean of its divisors is an integer number (28702843225).

Almost surely, 2^57405686449 is an apocalyptic number.

It is an amenable number.

57405686449 is a deficient number, since it is larger than the sum of its proper divisors (1).

57405686449 is an equidigital number, since it uses as much as digits as its factorization.

57405686449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 57405686449 in words is "fifty-seven billion, four hundred five million, six hundred eighty-six thousand, four hundred forty-nine".