51868505050 has 12 divisors (see below), whose sum is σ = 96475419486. Its totient is φ = 20747402000.

The previous prime is 51868505041. The next prime is 51868505053. The reversal of 51868505050 is 5050586815.

51868505050 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 3 ways, for example, as 30727635849 + 21140869201 = 175293^2 + 145399^2 .

It is a super-2 number, since 2×51868505050² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51868504988 and 51868505006.

It is not an unprimeable number, because it can be changed into a prime (51868505053) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 518685001 + ... + 518685100.

Almost surely, 2^51868505050 is an apocalyptic number.

51868505050 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51868505050 is a deficient number, since it is larger than the sum of its proper divisors (44606914436).

51868505050 is a wasteful number, since it uses less digits than its factorization.

51868505050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1037370113 (or 1037370108 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 43.

The spelling of 51868505050 in words is "fifty-one billion, eight hundred sixty-eight million, five hundred five thousand, fifty".