51350012530 has 16 divisors (see below), whose sum is σ = 94684414104. Its totient is φ = 20039029120.

The previous prime is 51350012521. The next prime is 51350012569. The reversal of 51350012530 is 3521005315.

51350012530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 41053648689 + 10296363841 = 202617^2 + 101471^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51350012495 and 51350012504.

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, 62621557 + ... + 62622376.

Almost surely, 2^51350012530 is an apocalyptic number.

51350012530 is a deficient number, since it is larger than the sum of its proper divisors (43334401574).

51350012530 is a wasteful number, since it uses less digits than its factorization.

51350012530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125243981.

The product of its (nonzero) digits is 2250, while the sum is 25.

Adding to 51350012530 its reverse (3521005315), we get a palindrome (54871017845).

The spelling of 51350012530 in words is "fifty-one billion, three hundred fifty million, twelve thousand, five hundred thirty".