51205053213130 has 16 divisors (see below), whose sum is σ = 92250733621320. Its totient is φ = 20463879543552.

The previous prime is 51205053213059. The next prime is 51205053213157. The reversal of 51205053213130 is 3131235050215.

It can be written as a sum of positive squares in 4 ways, for example, as 46053419795289 + 5151633417841 = 6786267^2 + 2269721^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51205053213092 and 51205053213101.

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, 2267705859 + ... + 2267728438.

Almost surely, 2^{51205053213130} is an apocalyptic number.

51205053213130 is a deficient number, since it is larger than the sum of its proper divisors (41045680408190).

51205053213130 is a wasteful number, since it uses less digits than its factorization.

51205053213130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535435433.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 51205053213130 its reverse (3131235050215), we get a palindrome (54336288263345).

The spelling of 51205053213130 in words is "fifty-one trillion, two hundred five billion, fifty-three million, two hundred thirteen thousand, one hundred thirty".