51630211314340 has 72 divisors (see below), whose sum is σ = 114769843893432. Its totient is φ = 19507075015680.

The previous prime is 51630211314289. The next prime is 51630211314349. The reversal of 51630211314340 is 4341311203615.

It can be written as a sum of positive squares in 4 ways, for example, as 572298302016 + 51057913012324 = 756504^2 + 7145482^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51630211314296 and 51630211314305.

It is not an unprimeable number, because it can be changed into a prime (51630211314349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8176651 + ... + 13042930.

It is an arithmetic number, because the mean of its divisors is an integer number (1594025609631).

Almost surely, 2^{51630211314340} is an apocalyptic number.

It is an amenable number.

51630211314340 is an abundant number, since it is smaller than the sum of its proper divisors (63139632579092).

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

51630211314340 is a wasteful number, since it uses less digits than its factorization.

51630211314340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21219965 (or 21219944 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 51630211314340 its reverse (4341311203615), we get a palindrome (55971522517955).

The spelling of 51630211314340 in words is "fifty-one trillion, six hundred thirty billion, two hundred eleven million, three hundred fourteen thousand, three hundred forty".