51303251101242 has 32 divisors (see below), whose sum is σ = 117265109270400. Its totient is φ = 14658004827648.

The previous prime is 51303251101211. The next prime is 51303251101247. The reversal of 51303251101242 is 24210115230315.

It is a happy number.

51303251101242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51303251101247) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6919234 + ... + 12267122.

It is an arithmetic number, because the mean of its divisors is an integer number (3664534664700).

Almost surely, 2^{51303251101242} is an apocalyptic number.

51303251101242 is an abundant number, since it is smaller than the sum of its proper divisors (65961858169158).

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

51303251101242 is a wasteful number, since it uses less digits than its factorization.

51303251101242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5576310.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 51303251101242 its reverse (24210115230315), we get a palindrome (75513366331557).

The spelling of 51303251101242 in words is "fifty-one trillion, three hundred three billion, two hundred fifty-one million, one hundred one thousand, two hundred forty-two".