126512712191 has 2 divisors, whose sum is σ = 126512712192. Its totient is φ = 126512712190.

The previous prime is 126512712127. The next prime is 126512712253. The reversal of 126512712191 is 191217215621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126512712191 - 2⁶ = 126512712127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126512712091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63256356095 + 63256356096.

It is an arithmetic number, because the mean of its divisors is an integer number (63256356096).

Almost surely, 2^126512712191 is an apocalyptic number.

126512712191 is a deficient number, since it is larger than the sum of its proper divisors (1).

126512712191 is an equidigital number, since it uses as much as digits as its factorization.

126512712191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 38.

The spelling of 126512712191 in words is "one hundred twenty-six billion, five hundred twelve million, seven hundred twelve thousand, one hundred ninety-one".