52052781312 has 432 divisors, whose sum is σ = 176992478208. Its totient is φ = 14403502080.

The previous prime is 52052781307. The next prime is 52052781323. The reversal of 52052781312 is 21318725025.

52052781312 is a `hidden beast` number, since 5 + 20 + 527 + 81 + 31 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147458128 + ... + 147458480.

Almost surely, 2^52052781312 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 52052781312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88496239104).

52052781312 is an abundant number, since it is smaller than the sum of its proper divisors (124939696896).

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

52052781312 is a wasteful number, since it uses less digits than its factorization.

52052781312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 52052781312 in words is "fifty-two billion, fifty-two million, seven hundred eighty-one thousand, three hundred twelve".