51589367168 has 64 divisors (see below), whose sum is σ = 105866036640. Its totient is φ = 25026048000.

The previous prime is 51589367147. The next prime is 51589367171. The reversal of 51589367168 is 86176398515.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×51589367168² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922733 + ... + 977043.

Almost surely, 2^51589367168 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 51589367168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52933018320).

51589367168 is an abundant number, since it is smaller than the sum of its proper divisors (54276669472).

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

51589367168 is a wasteful number, since it uses less digits than its factorization.

51589367168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54547 (or 54535 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 59.

The spelling of 51589367168 in words is "fifty-one billion, five hundred eighty-nine million, three hundred sixty-seven thousand, one hundred sixty-eight".