51330550140031 has 4 divisors (see below), whose sum is σ = 51399635672592. Its totient is φ = 51261464607472.

The previous prime is 51330550139989. The next prime is 51330550140061. The reversal of 51330550140031 is 13004105503315.

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

It is a cyclic number.

It is not a de Polignac number, because 51330550140031 - 2³⁷ = 51193111186559 is a prime.

It is a super-2 number, since 2×51330550140031² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51330550139975 and 51330550140002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51330550140061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34542765166 + ... + 34542766651.

It is an arithmetic number, because the mean of its divisors is an integer number (12849908918148).

Almost surely, 2^{51330550140031} is an apocalyptic number.

51330550140031 is a deficient number, since it is larger than the sum of its proper divisors (69085532561).

51330550140031 is an equidigital number, since it uses as much as digits as its factorization.

51330550140031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69085532560.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 51330550140031 its reverse (13004105503315), we get a palindrome (64334655643346).

The spelling of 51330550140031 in words is "fifty-one trillion, three hundred thirty billion, five hundred fifty million, one hundred forty thousand, thirty-one".