486723857657 has 2 divisors, whose sum is σ = 486723857658. Its totient is φ = 486723857656.

The previous prime is 486723857623. The next prime is 486723857681. The reversal of 486723857657 is 756758327684.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479561790016 + 7162067641 = 692504^2 + 84629^2 .

It is a cyclic number.

It is not a de Polignac number, because 486723857657 - 2¹⁴ = 486723841273 is a prime.

It is a super-2 number, since 2×486723857657² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (486726857657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243361928828 + 243361928829.

It is an arithmetic number, because the mean of its divisors is an integer number (243361928829).

Almost surely, 2^486723857657 is an apocalyptic number.

It is an amenable number.

486723857657 is a deficient number, since it is larger than the sum of its proper divisors (1).

486723857657 is an equidigital number, since it uses as much as digits as its factorization.

486723857657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 474163200, while the sum is 68.

The spelling of 486723857657 in words is "four hundred eighty-six billion, seven hundred twenty-three million, eight hundred fifty-seven thousand, six hundred fifty-seven".