126263733091 has 2 divisors, whose sum is σ = 126263733092. Its totient is φ = 126263733090.

The previous prime is 126263733077. The next prime is 126263733131. The reversal of 126263733091 is 190337362621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126263733091 - 2⁵ = 126263733059 is a prime.

It is not a weakly prime, because it can be changed into another prime (126263733061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63131866545 + 63131866546.

It is an arithmetic number, because the mean of its divisors is an integer number (63131866546).

Almost surely, 2^126263733091 is an apocalyptic number.

126263733091 is a deficient number, since it is larger than the sum of its proper divisors (1).

126263733091 is an equidigital number, since it uses as much as digits as its factorization.

126263733091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 43.

The spelling of 126263733091 in words is "one hundred twenty-six billion, two hundred sixty-three million, seven hundred thirty-three thousand, ninety-one".