57845861641 has 2 divisors, whose sum is σ = 57845861642. Its totient is φ = 57845861640.

The previous prime is 57845861609. The next prime is 57845861659. The reversal of 57845861641 is 14616854875.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40078038025 + 17767823616 = 200195^2 + 133296^2 .

It is a cyclic number.

It is not a de Polignac number, because 57845861641 - 2⁵ = 57845861609 is a prime.

It is a super-2 number, since 2×57845861641² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (57845861441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28922930820 + 28922930821.

It is an arithmetic number, because the mean of its divisors is an integer number (28922930821).

Almost surely, 2^57845861641 is an apocalyptic number.

It is an amenable number.

57845861641 is a deficient number, since it is larger than the sum of its proper divisors (1).

57845861641 is an equidigital number, since it uses as much as digits as its factorization.

57845861641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6451200, while the sum is 55.

The spelling of 57845861641 in words is "fifty-seven billion, eight hundred forty-five million, eight hundred sixty-one thousand, six hundred forty-one".