656342134043 has 2 divisors, whose sum is σ = 656342134044. Its totient is φ = 656342134042.

The previous prime is 656342133977. The next prime is 656342134051. The reversal of 656342134043 is 340431243656.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-656342134043 is a prime.

It is not a weakly prime, because it can be changed into another prime (656342134843) 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, 328171067021 + 328171067022.

It is an arithmetic number, because the mean of its divisors is an integer number (328171067022).

Almost surely, 2^656342134043 is an apocalyptic number.

656342134043 is a deficient number, since it is larger than the sum of its proper divisors (1).

656342134043 is an equidigital number, since it uses as much as digits as its factorization.

656342134043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 41.

Adding to 656342134043 its reverse (340431243656), we get a palindrome (996773377699).

The spelling of 656342134043 in words is "six hundred fifty-six billion, three hundred forty-two million, one hundred thirty-four thousand, forty-three".