2013121500056 has 32 divisors (see below), whose sum is σ = 3997034424000. Its totient is φ = 947257391616.

The previous prime is 2013121500029. The next prime is 2013121500101. The reversal of 2013121500056 is 6500051213102.

It is a junction number, because it is equal to n+sod(n) for n = 2013121499998 and 2013121500034.

It is a congruent number.

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, 653090 + ... + 2110158.

It is an arithmetic number, because the mean of its divisors is an integer number (124907325750).

Almost surely, 2^{2013121500056} is an apocalyptic number.

It is an amenable number.

2013121500056 is a deficient number, since it is larger than the sum of its proper divisors (1983912923944).

2013121500056 is a wasteful number, since it uses less digits than its factorization.

2013121500056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467251 (or 1467247 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 2013121500056 its reverse (6500051213102), we get a palindrome (8513172713158).

The spelling of 2013121500056 in words is "two trillion, thirteen billion, one hundred twenty-one million, five hundred thousand, fifty-six".