126566604123 has 16 divisors (see below), whose sum is σ = 177662833920. Its totient is φ = 79925330016.

The previous prime is 126566604121. The next prime is 126566604149. The reversal of 126566604123 is 321406665621.

It is not a de Polignac number, because 126566604123 - 2¹ = 126566604121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126566604121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250461 + ... + 562017.

It is an arithmetic number, because the mean of its divisors is an integer number (11103927120).

Almost surely, 2^126566604123 is an apocalyptic number.

126566604123 is a deficient number, since it is larger than the sum of its proper divisors (51096229797).

126566604123 is a wasteful number, since it uses less digits than its factorization.

126566604123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318706.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 126566604123 in words is "one hundred twenty-six billion, five hundred sixty-six million, six hundred four thousand, one hundred twenty-three".