72020539384 has 8 divisors (see below), whose sum is σ = 135038511360. Its totient is φ = 36010269688.

The previous prime is 72020539379. The next prime is 72020539397. The reversal of 72020539384 is 48393502027.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 72020539384.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4501283704 + ... + 4501283719.

It is an arithmetic number, because the mean of its divisors is an integer number (16879813920).

Almost surely, 2^72020539384 is an apocalyptic number.

It is an amenable number.

72020539384 is a deficient number, since it is larger than the sum of its proper divisors (63017971976).

72020539384 is a wasteful number, since it uses less digits than its factorization.

72020539384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9002567429 (or 9002567425 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 72020539384 in words is "seventy-two billion, twenty million, five hundred thirty-nine thousand, three hundred eighty-four".