52781245776 has 240 divisors, whose sum is σ = 181836695040. Its totient is φ = 13954187520.

The previous prime is 52781245747. The next prime is 52781245787. The reversal of 52781245776 is 67754218725.

52781245776 is a `hidden beast` number, since 52 + 7 + 8 + 12 + 4 + 577 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 791491 + ... + 855581.

It is an arithmetic number, because the mean of its divisors is an integer number (757652896).

Almost surely, 2^52781245776 is an apocalyptic number.

52781245776 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52781245776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90918347520).

52781245776 is an abundant number, since it is smaller than the sum of its proper divisors (129055449264).

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

52781245776 is a wasteful number, since it uses less digits than its factorization.

52781245776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64174 (or 64165 counting only the distinct ones).

The product of its digits is 6585600, while the sum is 54.

The spelling of 52781245776 in words is "fifty-two billion, seven hundred eighty-one million, two hundred forty-five thousand, seven hundred seventy-six".