51388537160 has 16 divisors (see below), whose sum is σ = 115624208700. Its totient is φ = 20555414848.

The previous prime is 51388537153. The next prime is 51388537163. The reversal of 51388537160 is 6173588315.

It can be written as a sum of positive squares in 2 ways, for example, as 48647595844 + 2740941316 = 220562^2 + 52354^2 .

It is not an unprimeable number, because it can be changed into a prime (51388537163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 642356675 + ... + 642356754.

Almost surely, 2^51388537160 is an apocalyptic number.

It is an amenable number.

51388537160 is an abundant number, since it is smaller than the sum of its proper divisors (64235671540).

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

51388537160 is a wasteful number, since it uses less digits than its factorization.

51388537160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284713440 (or 1284713436 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 47.

The spelling of 51388537160 in words is "fifty-one billion, three hundred eighty-eight million, five hundred thirty-seven thousand, one hundred sixty".