656060120489 has 2 divisors, whose sum is σ = 656060120490. Its totient is φ = 656060120488.

The previous prime is 656060120461. The next prime is 656060120491. The reversal of 656060120489 is 984021060656.

656060120489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 404613032464 + 251447088025 = 636092^2 + 501445^2 .

It is a cyclic number.

It is not a de Polignac number, because 656060120489 - 2²⁸ = 655791685033 is a prime.

Together with 656060120491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (656060120389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328030060244 + 328030060245.

It is an arithmetic number, because the mean of its divisors is an integer number (328030060245).

Almost surely, 2^656060120489 is an apocalyptic number.

It is an amenable number.

656060120489 is a deficient number, since it is larger than the sum of its proper divisors (1).

656060120489 is an equidigital number, since it uses as much as digits as its factorization.

656060120489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 656060120489 in words is "six hundred fifty-six billion, sixty million, one hundred twenty thousand, four hundred eighty-nine".