557683363649 has 2 divisors, whose sum is σ = 557683363650. Its totient is φ = 557683363648.

The previous prime is 557683363591. The next prime is 557683363661. The reversal of 557683363649 is 946363386755.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288911625025 + 268771738624 = 537505^2 + 518432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557683363649 is a prime.

It is a super-2 number, since 2×557683363649² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (557683363249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278841681824 + 278841681825.

It is an arithmetic number, because the mean of its divisors is an integer number (278841681825).

Almost surely, 2^557683363649 is an apocalyptic number.

It is an amenable number.

557683363649 is a deficient number, since it is larger than the sum of its proper divisors (1).

557683363649 is an equidigital number, since it uses as much as digits as its factorization.

557683363649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 293932800, while the sum is 65.

The spelling of 557683363649 in words is "five hundred fifty-seven billion, six hundred eighty-three million, three hundred sixty-three thousand, six hundred forty-nine".