51338750850 has 36 divisors (see below), whose sum is σ = 137930111826. Its totient is φ = 13690333440.

The previous prime is 51338750819. The next prime is 51338750851. The reversal of 51338750850 is 5805783315.

51338750850 is a `hidden beast` number, since 5 + 13 + 3 + 87 + 508 + 50 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 41810843529 + 9527907321 = 204477^2 + 97611^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 51338750796 and 51338750805.

It is not an unprimeable number, because it can be changed into a prime (51338750851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 57042607 + ... + 57043506.

Almost surely, 2^51338750850 is an apocalyptic number.

51338750850 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51338750850 is an abundant number, since it is smaller than the sum of its proper divisors (86591360976).

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

51338750850 is a wasteful number, since it uses less digits than its factorization.

51338750850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114086131 (or 114086123 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

The spelling of 51338750850 in words is "fifty-one billion, three hundred thirty-eight million, seven hundred fifty thousand, eight hundred fifty".