51210331465542 has 8 divisors (see below), whose sum is σ = 102420662931096. Its totient is φ = 17070110488512.

The previous prime is 51210331465541. The next prime is 51210331465549. The reversal of 51210331465542 is 24556413301215.

It is a sphenic number, since it is the product of 3 distinct primes.

51210331465542 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 51210331465494 and 51210331465503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51210331465541) 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, 4267527622123 + ... + 4267527622134.

It is an arithmetic number, because the mean of its divisors is an integer number (12802582866387).

Almost surely, 2^{51210331465542} is an apocalyptic number.

51210331465542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51210331465542 is a wasteful number, since it uses less digits than its factorization.

51210331465542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8535055244262.

The product of its (nonzero) digits is 432000, while the sum is 42.

Adding to 51210331465542 its reverse (24556413301215), we get a palindrome (75766744766757).

The spelling of 51210331465542 in words is "fifty-one trillion, two hundred ten billion, three hundred thirty-one million, four hundred sixty-five thousand, five hundred forty-two".