8456437160557 has 2 divisors, whose sum is σ = 8456437160558. Its totient is φ = 8456437160556.

The previous prime is 8456437160533. The next prime is 8456437160579. The reversal of 8456437160557 is 7550617346548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7471224089316 + 985213071241 = 2733354^2 + 992579^2 .

It is a cyclic number.

It is not a de Polignac number, because 8456437160557 - 2¹¹ = 8456437158509 is a prime.

It is a super-2 number, since 2×8456437160557² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8456437160495 and 8456437160504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8456437160657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4228218580278 + 4228218580279.

It is an arithmetic number, because the mean of its divisors is an integer number (4228218580279).

Almost surely, 2^{8456437160557} is an apocalyptic number.

It is an amenable number.

8456437160557 is a deficient number, since it is larger than the sum of its proper divisors (1).

8456437160557 is an equidigital number, since it uses as much as digits as its factorization.

8456437160557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672000, while the sum is 61.

The spelling of 8456437160557 in words is "eight trillion, four hundred fifty-six billion, four hundred thirty-seven million, one hundred sixty thousand, five hundred fifty-seven".