126774238565 has 32 divisors (see below), whose sum is σ = 166179638016. Its totient is φ = 92277619200.

The previous prime is 126774238523. The next prime is 126774238571. The reversal of 126774238565 is 565832477621.

It is not a de Polignac number, because 126774238565 - 2⁶ = 126774238501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126774238565.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 8471840 + ... + 8486790.

It is an arithmetic number, because the mean of its divisors is an integer number (5193113688).

Almost surely, 2^126774238565 is an apocalyptic number.

It is an amenable number.

126774238565 is a deficient number, since it is larger than the sum of its proper divisors (39405399451).

126774238565 is a wasteful number, since it uses less digits than its factorization.

126774238565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16829.

The product of its digits is 16934400, while the sum is 56.

The spelling of 126774238565 in words is "one hundred twenty-six billion, seven hundred seventy-four million, two hundred thirty-eight thousand, five hundred sixty-five".