51080030172 has 72 divisors (see below), whose sum is σ = 133102569600. Its totient is φ = 16504795008.

The previous prime is 51080030159. The next prime is 51080030189. The reversal of 51080030172 is 27103008015.

51080030172 is a `hidden beast` number, since 510 + 80 + 0 + 3 + 0 + 1 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 287029 + ... + 429587.

It is an arithmetic number, because the mean of its divisors is an integer number (1848646800).

Almost surely, 2^51080030172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51080030172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66551284800).

51080030172 is an abundant number, since it is smaller than the sum of its proper divisors (82022539428).

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

51080030172 is a wasteful number, since it uses less digits than its factorization.

51080030172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142875 (or 142870 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

Adding to 51080030172 its reverse (27103008015), we get a palindrome (78183038187).

The spelling of 51080030172 in words is "fifty-one billion, eighty million, thirty thousand, one hundred seventy-two".