51510218060 has 72 divisors (see below), whose sum is σ = 125868322944. Its totient is φ = 17655563520.

The previous prime is 51510218029. The next prime is 51510218063. The reversal of 51510218060 is 6081201515.

It is not an unprimeable number, because it can be changed into a prime (51510218063) 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 23 ways as a sum of consecutive naturals, for example, 5294000 + ... + 5303720.

It is an arithmetic number, because the mean of its divisors is an integer number (1748171152).

Almost surely, 2^51510218060 is an apocalyptic number.

It is an amenable number.

51510218060 is an abundant number, since it is smaller than the sum of its proper divisors (74358104884).

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

51510218060 is a wasteful number, since it uses less digits than its factorization.

51510218060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15151 (or 15142 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 29.

Adding to 51510218060 its reverse (6081201515), we get a palindrome (57591419575).

The spelling of 51510218060 in words is "fifty-one billion, five hundred ten million, two hundred eighteen thousand, sixty".