126556440406 has 32 divisors (see below), whose sum is σ = 208675792512. Its totient is φ = 57086103360.

The previous prime is 126556440401. The next prime is 126556440421. The reversal of 126556440406 is 604044655621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126556440401) 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, 12132165 + ... + 12142591.

It is an arithmetic number, because the mean of its divisors is an integer number (6521118516).

Almost surely, 2^126556440406 is an apocalyptic number.

126556440406 is a deficient number, since it is larger than the sum of its proper divisors (82119352106).

126556440406 is a wasteful number, since it uses less digits than its factorization.

126556440406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14604.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 126556440406 in words is "one hundred twenty-six billion, five hundred fifty-six million, four hundred forty thousand, four hundred six".