126769691673 has 12 divisors (see below), whose sum is σ = 183114877140. Its totient is φ = 84511696896.

The previous prime is 126769691663. The next prime is 126769691677. The reversal of 126769691673 is 376196967621.

It can be written as a sum of positive squares in 2 ways, for example, as 69204246489 + 57565445184 = 263067^2 + 239928^2 .

It is not a de Polignac number, because 126769691673 - 2⁸ = 126769691417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126769691673.

It is not an unprimeable number, because it can be changed into a prime (126769691677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 904033 + ... + 1034801.

It is an arithmetic number, because the mean of its divisors is an integer number (15259573095).

Almost surely, 2^126769691673 is an apocalyptic number.

It is an amenable number.

126769691673 is a deficient number, since it is larger than the sum of its proper divisors (56345185467).

126769691673 is a wasteful number, since it uses less digits than its factorization.

126769691673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238488 (or 238485 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 63.

The spelling of 126769691673 in words is "one hundred twenty-six billion, seven hundred sixty-nine million, six hundred ninety-one thousand, six hundred seventy-three".