51243113523013 has 8 divisors (see below), whose sum is σ = 51321240812160. Its totient is φ = 51164987351520.

The previous prime is 51243113522999. The next prime is 51243113523053. The reversal of 51243113523013 is 31032531134215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51243113523013 - 2²⁹ = 51242576652101 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 51243113523013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51243113523053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176286873 + ... + 176577313.

It is an arithmetic number, because the mean of its divisors is an integer number (6415155101520).

Almost surely, 2^{51243113523013} is an apocalyptic number.

It is an amenable number.

51243113523013 is a deficient number, since it is larger than the sum of its proper divisors (78127289147).

51243113523013 is a wasteful number, since it uses less digits than its factorization.

51243113523013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558827.

The product of its (nonzero) digits is 32400, while the sum is 34.

Adding to 51243113523013 its reverse (31032531134215), we get a palindrome (82275644657228).

The spelling of 51243113523013 in words is "fifty-one trillion, two hundred forty-three billion, one hundred thirteen million, five hundred twenty-three thousand, thirteen".