52856667984 has 80 divisors (see below), whose sum is σ = 139971916224. Its totient is φ = 17177472000.

The previous prime is 52856667961. The next prime is 52856668021. The reversal of 52856667984 is 48976665825.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3166059 + ... + 3182709.

Almost surely, 2^52856667984 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 52856667984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69985958112).

52856667984 is an abundant number, since it is smaller than the sum of its proper divisors (87115248240).

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

52856667984 is a wasteful number, since it uses less digits than its factorization.

52856667984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18316 (or 18310 counting only the distinct ones).

The product of its digits is 174182400, while the sum is 66.

The spelling of 52856667984 in words is "fifty-two billion, eight hundred fifty-six million, six hundred sixty-seven thousand, nine hundred eighty-four".