126669195646 has 16 divisors (see below), whose sum is σ = 218284093440. Its totient is φ = 54002572920.

The previous prime is 126669195637. The next prime is 126669195647. The reversal of 126669195646 is 646591966621.

126669195646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126669195647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23682666 + ... + 23688013.

It is an arithmetic number, because the mean of its divisors is an integer number (13642755840).

Almost surely, 2^126669195646 is an apocalyptic number.

126669195646 is a deficient number, since it is larger than the sum of its proper divisors (91614897794).

126669195646 is a wasteful number, since it uses less digits than its factorization.

126669195646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47370879.

The product of its digits is 25194240, while the sum is 61.

The spelling of 126669195646 in words is "one hundred twenty-six billion, six hundred sixty-nine million, one hundred ninety-five thousand, six hundred forty-six".