51255143154205 has 4 divisors (see below), whose sum is σ = 61506171785052. Its totient is φ = 41004114523360.

The previous prime is 51255143154157. The next prime is 51255143154217. The reversal of 51255143154205 is 50245134155215.

51255143154205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24915481554681 + 26339661599524 = 4991541^2 + 5132218^2 .

It is not a de Polignac number, because 51255143154205 - 2¹⁵ = 51255143121437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5125514315416 + ... + 5125514315425.

It is an arithmetic number, because the mean of its divisors is an integer number (15376542946263).

Almost surely, 2^{51255143154205} is an apocalyptic number.

It is an amenable number.

51255143154205 is a deficient number, since it is larger than the sum of its proper divisors (10251028630847).

51255143154205 is a wasteful number, since it uses less digits than its factorization.

51255143154205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10251028630846.

The product of its (nonzero) digits is 600000, while the sum is 43.

The spelling of 51255143154205 in words is "fifty-one trillion, two hundred fifty-five billion, one hundred forty-three million, one hundred fifty-four thousand, two hundred five".