12137721044756 has 12 divisors (see below), whose sum is σ = 22490483112468. Its totient is φ = 5711868726912.

The previous prime is 12137721044753. The next prime is 12137721044819. The reversal of 12137721044756 is 65744012773121.

It can be written as a sum of positive squares in 2 ways, for example, as 10601757409156 + 1535963635600 = 3256034^2 + 1239340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12137721044753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89247948791 + ... + 89247948926.

It is an arithmetic number, because the mean of its divisors is an integer number (1874206926039).

Almost surely, 2^{12137721044756} is an apocalyptic number.

It is an amenable number.

12137721044756 is a deficient number, since it is larger than the sum of its proper divisors (10352762067712).

12137721044756 is a wasteful number, since it uses less digits than its factorization.

12137721044756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178495897738 (or 178495897736 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 12137721044756 in words is "twelve trillion, one hundred thirty-seven billion, seven hundred twenty-one million, forty-four thousand, seven hundred fifty-six".