51513143125 has 40 divisors (see below), whose sum is σ = 68808624192. Its totient is φ = 38456880000.

The previous prime is 51513143089. The next prime is 51513143131. The reversal of 51513143125 is 52134131515.

It is not a de Polignac number, because 51513143125 - 2⁹ = 51513142613 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 39 ways as a sum of consecutive naturals, for example, 545674 + ... + 633076.

Almost surely, 2^51513143125 is an apocalyptic number.

It is an amenable number.

51513143125 is a deficient number, since it is larger than the sum of its proper divisors (17295481067).

51513143125 is an equidigital number, since it uses as much as digits as its factorization.

51513143125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87487 (or 87472 counting only the distinct ones).

The product of its digits is 9000, while the sum is 31.

The spelling of 51513143125 in words is "fifty-one billion, five hundred thirteen million, one hundred forty-three thousand, one hundred twenty-five".