126454875791 has 2 divisors, whose sum is σ = 126454875792. Its totient is φ = 126454875790.

The previous prime is 126454875749. The next prime is 126454875797. The reversal of 126454875791 is 197578454621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126454875791 is a prime.

It is a super-4 number, since 4×126454875791⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 126454875791.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126454875797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63227437895 + 63227437896.

It is an arithmetic number, because the mean of its divisors is an integer number (63227437896).

Almost surely, 2^126454875791 is an apocalyptic number.

126454875791 is a deficient number, since it is larger than the sum of its proper divisors (1).

126454875791 is an equidigital number, since it uses as much as digits as its factorization.

126454875791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16934400, while the sum is 59.

The spelling of 126454875791 in words is "one hundred twenty-six billion, four hundred fifty-four million, eight hundred seventy-five thousand, seven hundred ninety-one".