126225864991 has 2 divisors, whose sum is σ = 126225864992. Its totient is φ = 126225864990.

The previous prime is 126225864923. The next prime is 126225864997. The reversal of 126225864991 is 199468522621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126225864991 - 2¹⁷ = 126225733919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126225864997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63112932495 + 63112932496.

It is an arithmetic number, because the mean of its divisors is an integer number (63112932496).

Almost surely, 2^126225864991 is an apocalyptic number.

126225864991 is a deficient number, since it is larger than the sum of its proper divisors (1).

126225864991 is an equidigital number, since it uses as much as digits as its factorization.

126225864991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 55.

The spelling of 126225864991 in words is "one hundred twenty-six billion, two hundred twenty-five million, eight hundred sixty-four thousand, nine hundred ninety-one".