57163026045581 has 2 divisors, whose sum is σ = 57163026045582. Its totient is φ = 57163026045580.

The previous prime is 57163026045571. The next prime is 57163026045617. The reversal of 57163026045581 is 18554062036175.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50850319545481 + 6312706500100 = 7130941^2 + 2512510^2 .

It is a cyclic number.

It is not a de Polignac number, because 57163026045581 - 2³⁸ = 56888148138637 is a prime.

It is a super-2 number, since 2×57163026045581² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57163026045551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28581513022790 + 28581513022791.

It is an arithmetic number, because the mean of its divisors is an integer number (28581513022791).

Almost surely, 2^{57163026045581} is an apocalyptic number.

It is an amenable number.

57163026045581 is a deficient number, since it is larger than the sum of its proper divisors (1).

57163026045581 is an equidigital number, since it uses as much as digits as its factorization.

57163026045581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048000, while the sum is 53.

The spelling of 57163026045581 in words is "fifty-seven trillion, one hundred sixty-three billion, twenty-six million, forty-five thousand, five hundred eighty-one".