51884687360 has 128 divisors (see below), whose sum is σ = 135846190800. Its totient is φ = 18866503680.

The previous prime is 51884687357. The next prime is 51884687369. The reversal of 51884687360 is 6378648815.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 51884687296 and 51884687305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51884687369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1787846 + ... + 1816634.

Almost surely, 2^51884687360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51884687360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67923095400).

51884687360 is an abundant number, since it is smaller than the sum of its proper divisors (83961503440).

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

51884687360 is an equidigital number, since it uses as much as digits as its factorization.

51884687360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28835 (or 28807 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 51884687360 in words is "fifty-one billion, eight hundred eighty-four million, six hundred eighty-seven thousand, three hundred sixty".