13123434566056 has 32 divisors (see below), whose sum is σ = 26051235386400. Its totient is φ = 6180430991040.

The previous prime is 13123434566017. The next prime is 13123434566107. The reversal of 13123434566056 is 65066543432131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249506610 + ... + 249559201.

It is an arithmetic number, because the mean of its divisors is an integer number (814101105825).

Almost surely, 2^{13123434566056} is an apocalyptic number.

It is an amenable number.

13123434566056 is a deficient number, since it is larger than the sum of its proper divisors (12927800820344).

13123434566056 is a wasteful number, since it uses less digits than its factorization.

13123434566056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499066009 (or 499066005 counting only the distinct ones).

The product of its (nonzero) digits is 4665600, while the sum is 49.

Adding to 13123434566056 its reverse (65066543432131), we get a palindrome (78189977998187).

The spelling of 13123434566056 in words is "thirteen trillion, one hundred twenty-three billion, four hundred thirty-four million, five hundred sixty-six thousand, fifty-six".