656243650411 has 2 divisors, whose sum is σ = 656243650412. Its totient is φ = 656243650410.

The previous prime is 656243650409. The next prime is 656243650417. The reversal of 656243650411 is 114056342656.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 656243650411 - 2¹ = 656243650409 is a prime.

Together with 656243650409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (656243650417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328121825205 + 328121825206.

It is an arithmetic number, because the mean of its divisors is an integer number (328121825206).

Almost surely, 2^656243650411 is an apocalyptic number.

656243650411 is a deficient number, since it is larger than the sum of its proper divisors (1).

656243650411 is an equidigital number, since it uses as much as digits as its factorization.

656243650411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 656243650411 in words is "six hundred fifty-six billion, two hundred forty-three million, six hundred fifty thousand, four hundred eleven".