12445124553555 has 32 divisors (see below), whose sum is σ = 20242691180544. Its totient is φ = 6527562218496.

The previous prime is 12445124553517. The next prime is 12445124553557. The reversal of 12445124553555 is 55535542154421.

It is not a de Polignac number, because 12445124553555 - 2⁸ = 12445124553299 is a prime.

It is a super-2 number, since 2×12445124553555² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12445124553498 and 12445124553507.

It is not an unprimeable number, because it can be changed into a prime (12445124553557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9590302 + ... + 10810371.

It is an arithmetic number, because the mean of its divisors is an integer number (632584099392).

Almost surely, 2^{12445124553555} is an apocalyptic number.

12445124553555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12445124553555 is a deficient number, since it is larger than the sum of its proper divisors (7797566626989).

12445124553555 is a wasteful number, since it uses less digits than its factorization.

12445124553555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20401355.

The product of its digits is 12000000, while the sum is 51.

The spelling of 12445124553555 in words is "twelve trillion, four hundred forty-five billion, one hundred twenty-four million, five hundred fifty-three thousand, five hundred fifty-five".