656378624323 has 2 divisors, whose sum is σ = 656378624324. Its totient is φ = 656378624322.

The previous prime is 656378624249. The next prime is 656378624359. The reversal of 656378624323 is 323426873656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656378624323 is a prime.

It is not a weakly prime, because it can be changed into another prime (656378624123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328189312161 + 328189312162.

It is an arithmetic number, because the mean of its divisors is an integer number (328189312162).

Almost surely, 2^656378624323 is an apocalyptic number.

656378624323 is a deficient number, since it is larger than the sum of its proper divisors (1).

656378624323 is an equidigital number, since it uses as much as digits as its factorization.

656378624323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 55.

The spelling of 656378624323 in words is "six hundred fifty-six billion, three hundred seventy-eight million, six hundred twenty-four thousand, three hundred twenty-three".