56606561507 has 2 divisors, whose sum is σ = 56606561508. Its totient is φ = 56606561506.

The previous prime is 56606561491. The next prime is 56606561521. The reversal of 56606561507 is 70516560665.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56606561507 - 2⁴ = 56606561491 is a prime.

It is a super-2 number, since 2×56606561507² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56606561587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28303280753 + 28303280754.

It is an arithmetic number, because the mean of its divisors is an integer number (28303280754).

Almost surely, 2^56606561507 is an apocalyptic number.

56606561507 is a deficient number, since it is larger than the sum of its proper divisors (1).

56606561507 is an equidigital number, since it uses as much as digits as its factorization.

56606561507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 56606561507 in words is "fifty-six billion, six hundred six million, five hundred sixty-one thousand, five hundred seven".