51303215106020 has 24 divisors (see below), whose sum is σ = 107741327715000. Its totient is φ = 20520414424832.

The previous prime is 51303215105971. The next prime is 51303215106103. The reversal of 51303215106020 is 2060151230315.

51303215106020 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5826507681856 + 45476707424164 = 2413816^2 + 6743642^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53993345 + ... + 54935304.

It is an arithmetic number, because the mean of its divisors is an integer number (4489221988125).

Almost surely, 2^{51303215106020} is an apocalyptic number.

It is an amenable number.

51303215106020 is an abundant number, since it is smaller than the sum of its proper divisors (56438112608980).

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

51303215106020 is a wasteful number, since it uses less digits than its factorization.

51303215106020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108952207 (or 108952205 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 51303215106020 its reverse (2060151230315), we get a palindrome (53363366336335).

The spelling of 51303215106020 in words is "fifty-one trillion, three hundred three billion, two hundred fifteen million, one hundred six thousand, twenty".