659561857907 has 2 divisors, whose sum is σ = 659561857908. Its totient is φ = 659561857906.

The previous prime is 659561857873. The next prime is 659561857961. The reversal of 659561857907 is 709758165956.

659561857907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 659561857907 - 2¹⁰ = 659561856883 is a prime.

It is not a weakly prime, because it can be changed into another prime (659561857807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329780928953 + 329780928954.

It is an arithmetic number, because the mean of its divisors is an integer number (329780928954).

Almost surely, 2^659561857907 is an apocalyptic number.

659561857907 is a deficient number, since it is larger than the sum of its proper divisors (1).

659561857907 is an equidigital number, since it uses as much as digits as its factorization.

659561857907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 142884000, while the sum is 68.

The spelling of 659561857907 in words is "six hundred fifty-nine billion, five hundred sixty-one million, eight hundred fifty-seven thousand, nine hundred seven".