51703885647 has 12 divisors (see below), whose sum is σ = 74740723824. Its totient is φ = 34442795520.

The previous prime is 51703885609. The next prime is 51703885757. The reversal of 51703885647 is 74658830715.

It is a happy number.

51703885647 is a `hidden beast` number, since 5 + 1 + 70 + 3 + 8 + 8 + 564 + 7 = 666.

It is not a de Polignac number, because 51703885647 - 2¹⁰ = 51703884623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51703885593 and 51703885602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51703887647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2192754 + ... + 2216207.

It is an arithmetic number, because the mean of its divisors is an integer number (6228393652).

Almost surely, 2^51703885647 is an apocalyptic number.

51703885647 is a deficient number, since it is larger than the sum of its proper divisors (23036838177).

51703885647 is a wasteful number, since it uses less digits than its factorization.

51703885647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410270 (or 4410267 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 51703885647 in words is "fifty-one billion, seven hundred three million, eight hundred eighty-five thousand, six hundred forty-seven".