557161634621044 has 6 divisors (see below), whose sum is σ = 975032860586834. Its totient is φ = 278580817310520.

The previous prime is 557161634621021. The next prime is 557161634621047. The reversal of 557161634621044 is 440126436161755.

It can be written as a sum of positive squares in only one way, i.e., 366865679372644 + 190295955248400 = 19153738^2 + 13794780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557161634621047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69645204327627 + ... + 69645204327634.

Almost surely, 2^{557161634621044} is an apocalyptic number.

It is an amenable number.

557161634621044 is a deficient number, since it is larger than the sum of its proper divisors (417871225965790).

557161634621044 is a wasteful number, since it uses less digits than its factorization.

557161634621044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139290408655265 (or 139290408655263 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 557161634621044 in words is "five hundred fifty-seven trillion, one hundred sixty-one billion, six hundred thirty-four million, six hundred twenty-one thousand, forty-four".