634071251111 has 2 divisors, whose sum is σ = 634071251112. Its totient is φ = 634071251110.

The previous prime is 634071251089. The next prime is 634071251119. The reversal of 634071251111 is 111152170436.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-634071251111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634071251119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317035625555 + 317035625556.

It is an arithmetic number, because the mean of its divisors is an integer number (317035625556).

Almost surely, 2^634071251111 is an apocalyptic number.

634071251111 is a deficient number, since it is larger than the sum of its proper divisors (1).

634071251111 is an equidigital number, since it uses as much as digits as its factorization.

634071251111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The spelling of 634071251111 in words is "six hundred thirty-four billion, seventy-one million, two hundred fifty-one thousand, one hundred eleven".