251343210011 has 2 divisors, whose sum is σ = 251343210012. Its totient is φ = 251343210010.

The previous prime is 251343209993. The next prime is 251343210103. The reversal of 251343210011 is 110012343152.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251343210011 is a prime.

It is not a weakly prime, because it can be changed into another prime (251343210311) 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, 125671605005 + 125671605006.

It is an arithmetic number, because the mean of its divisors is an integer number (125671605006).

Almost surely, 2^251343210011 is an apocalyptic number.

251343210011 is a deficient number, since it is larger than the sum of its proper divisors (1).

251343210011 is an equidigital number, since it uses as much as digits as its factorization.

251343210011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 251343210011 its reverse (110012343152), we get a palindrome (361355553163).

The spelling of 251343210011 in words is "two hundred fifty-one billion, three hundred forty-three million, two hundred ten thousand, eleven".