51179429856 has 48 divisors (see below), whose sum is σ = 134358863184. Its totient is φ = 17058177024.

The previous prime is 51179429839. The next prime is 51179429879. The reversal of 51179429856 is 65892497115.

It is a happy number.

51179429856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 51179429796 and 51179429805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1388886 + ... + 1425258.

It is an arithmetic number, because the mean of its divisors is an integer number (2799142983).

Almost surely, 2^51179429856 is an apocalyptic number.

It is an amenable number.

51179429856 is an abundant number, since it is smaller than the sum of its proper divisors (83179433328).

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

51179429856 is a wasteful number, since it uses less digits than its factorization.

51179429856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51043 (or 51035 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 57.

The spelling of 51179429856 in words is "fifty-one billion, one hundred seventy-nine million, four hundred twenty-nine thousand, eight hundred fifty-six".