51451043131320 has 128 divisors (see below), whose sum is σ = 182486458483200. Its totient is φ = 11354712961536.

The previous prime is 51451043131297. The next prime is 51451043131339. The reversal of 51451043131320 is 2313134015415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1056031534 + ... + 1056080253.

It is an arithmetic number, because the mean of its divisors is an integer number (1425675456900).

Almost surely, 2^{51451043131320} is an apocalyptic number.

It is an amenable number.

51451043131320 is an abundant number, since it is smaller than the sum of its proper divisors (131035415351880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51451043131320 is a wasteful number, since it uses less digits than its factorization.

51451043131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112111837 (or 2112111833 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 51451043131320 its reverse (2313134015415), we get a palindrome (53764177146735).

The spelling of 51451043131320 in words is "fifty-one trillion, four hundred fifty-one billion, forty-three million, one hundred thirty-one thousand, three hundred twenty".