11926726457 has 2 divisors, whose sum is σ = 11926726458. Its totient is φ = 11926726456.

The previous prime is 11926726423. The next prime is 11926726477. The reversal of 11926726457 is 75462762911.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10391967481 + 1534758976 = 101941^2 + 39176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11926726457 is a prime.

It is not a weakly prime, because it can be changed into another prime (11926726477) 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, 5963363228 + 5963363229.

It is an arithmetic number, because the mean of its divisors is an integer number (5963363229).

Almost surely, 2^11926726457 is an apocalyptic number.

It is an amenable number.

11926726457 is a deficient number, since it is larger than the sum of its proper divisors (1).

11926726457 is an equidigital number, since it uses as much as digits as its factorization.

11926726457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The spelling of 11926726457 in words is "eleven billion, nine hundred twenty-six million, seven hundred twenty-six thousand, four hundred fifty-seven".