126564910687 has 2 divisors, whose sum is σ = 126564910688. Its totient is φ = 126564910686.

The previous prime is 126564910651. The next prime is 126564910697. The reversal of 126564910687 is 786019465621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126564910687 - 2¹⁵ = 126564877919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126564910607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63282455343 + 63282455344.

It is an arithmetic number, because the mean of its divisors is an integer number (63282455344).

Almost surely, 2^126564910687 is an apocalyptic number.

126564910687 is a deficient number, since it is larger than the sum of its proper divisors (1).

126564910687 is an equidigital number, since it uses as much as digits as its factorization.

126564910687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 126564910687 in words is "one hundred twenty-six billion, five hundred sixty-four million, nine hundred ten thousand, six hundred eighty-seven".