52778569872 has 320 divisors, whose sum is σ = 166869319680. Its totient is φ = 14056243200.

The previous prime is 52778569861. The next prime is 52778569931. The reversal of 52778569872 is 27896587725.

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 63 ways as a sum of consecutive naturals, for example, 35444904 + ... + 35446392.

It is an arithmetic number, because the mean of its divisors is an integer number (521466624).

Almost surely, 2^52778569872 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 52778569872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83434659840).

52778569872 is an abundant number, since it is smaller than the sum of its proper divisors (114090749808).

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

52778569872 is a wasteful number, since it uses less digits than its factorization.

52778569872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662 (or 1656 counting only the distinct ones).

The product of its digits is 118540800, while the sum is 66.

The spelling of 52778569872 in words is "fifty-two billion, seven hundred seventy-eight million, five hundred sixty-nine thousand, eight hundred seventy-two".