51631146330 has 32 divisors (see below), whose sum is σ = 123936609600. Its totient is φ = 13765876992.

The previous prime is 51631146277. The next prime is 51631146331. The reversal of 51631146330 is 3364113615.

It is a junction number, because it is equal to n+sod(n) for n = 51631146291 and 51631146300.

It is not an unprimeable number, because it can be changed into a prime (51631146331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24466 + ... + 322274.

It is an arithmetic number, because the mean of its divisors is an integer number (3873019050).

Almost surely, 2^51631146330 is an apocalyptic number.

51631146330 is an abundant number, since it is smaller than the sum of its proper divisors (72305463270).

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

51631146330 is a wasteful number, since it uses less digits than its factorization.

51631146330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303598.

The product of its (nonzero) digits is 19440, while the sum is 33.

Adding to 51631146330 its reverse (3364113615), we get a palindrome (54995259945).

The spelling of 51631146330 in words is "fifty-one billion, six hundred thirty-one million, one hundred forty-six thousand, three hundred thirty".