51188029856 has 24 divisors (see below), whose sum is σ = 101815372260. Its totient is φ = 25330157568.

The previous prime is 51188029829. The next prime is 51188029861. The reversal of 51188029856 is 65892088115.

It is a happy number.

51188029856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47952240400 + 3235789456 = 218980^2 + 56884^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51188029798 and 51188029807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8242391 + ... + 8248598.

Almost surely, 2^51188029856 is an apocalyptic number.

It is an amenable number.

51188029856 is a deficient number, since it is larger than the sum of its proper divisors (50627342404).

51188029856 is a wasteful number, since it uses less digits than its factorization.

51188029856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16491096 (or 16491088 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 53.

The spelling of 51188029856 in words is "fifty-one billion, one hundred eighty-eight million, twenty-nine thousand, eight hundred fifty-six".