51058281307538 has 6 divisors (see below), whose sum is σ = 76587437119221. Its totient is φ = 25529135601132.

The previous prime is 51058281307457. The next prime is 51058281307577. The reversal of 51058281307538 is 83570318285015.

It can be written as a sum of positive squares in 2 ways, for example, as 30541793290369 + 20516488017169 = 5526463^2 + 4529513^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5052637.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7578956 + ... + 12631592.

Almost surely, 2^{51058281307538} is an apocalyptic number.

51058281307538 is a deficient number, since it is larger than the sum of its proper divisors (25529155811683).

51058281307538 is an frugal number, since it uses more digits than its factorization.

51058281307538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10105276 (or 5052639 counting only the distinct ones).

The product of its (nonzero) digits is 8064000, while the sum is 56.

The spelling of 51058281307538 in words is "fifty-one trillion, fifty-eight billion, two hundred eighty-one million, three hundred seven thousand, five hundred thirty-eight".