51558077116 has 192 divisors, whose sum is σ = 116501898240. Its totient is φ = 19425576960.

The previous prime is 51558077063. The next prime is 51558077143. The reversal of 51558077116 is 61177085515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 132539850 + ... + 132540238.

It is an arithmetic number, because the mean of its divisors is an integer number (606780720).

Almost surely, 2^51558077116 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 51558077116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58250949120).

51558077116 is an abundant number, since it is smaller than the sum of its proper divisors (64943821124).

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

51558077116 is a wasteful number, since it uses less digits than its factorization.

51558077116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 46.

The spelling of 51558077116 in words is "fifty-one billion, five hundred fifty-eight million, seventy-seven thousand, one hundred sixteen".