126043564013 has 2 divisors, whose sum is σ = 126043564014. Its totient is φ = 126043564012.

The previous prime is 126043563967. The next prime is 126043564021. The reversal of 126043564013 is 310465340621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69823834564 + 56219729449 = 264242^2 + 237107^2 .

It is a cyclic number.

It is not a de Polignac number, because 126043564013 - 2⁶ = 126043563949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126043563013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63021782006 + 63021782007.

It is an arithmetic number, because the mean of its divisors is an integer number (63021782007).

Almost surely, 2^126043564013 is an apocalyptic number.

It is an amenable number.

126043564013 is a deficient number, since it is larger than the sum of its proper divisors (1).

126043564013 is an equidigital number, since it uses as much as digits as its factorization.

126043564013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 126043564013 in words is "one hundred twenty-six billion, forty-three million, five hundred sixty-four thousand, thirteen".