52720532872 has 128 divisors (see below), whose sum is σ = 128843827200. Its totient is φ = 19677385728.

The previous prime is 52720532867. The next prime is 52720532873. The reversal of 52720532872 is 27823502725.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (52720532873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 743893 + ... + 811675.

It is an arithmetic number, because the mean of its divisors is an integer number (1006592400).

Almost surely, 2^52720532872 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 52720532872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64421913600).

52720532872 is an abundant number, since it is smaller than the sum of its proper divisors (76123294328).

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

52720532872 is a wasteful number, since it uses less digits than its factorization.

52720532872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67875 (or 67871 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 52720532872 in words is "fifty-two billion, seven hundred twenty million, five hundred thirty-two thousand, eight hundred seventy-two".