52991986539 has 8 divisors (see below), whose sum is σ = 70755640720. Its totient is φ = 35278161696.

The previous prime is 52991986519. The next prime is 52991986571. The reversal of 52991986539 is 93568919925.

52991986539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52991986539 - 2¹¹ = 52991984491 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52991986539.

It is not an unprimeable number, because it can be changed into a prime (52991986519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12454852 + ... + 12459105.

It is an arithmetic number, because the mean of its divisors is an integer number (8844455090).

Almost surely, 2^52991986539 is an apocalyptic number.

52991986539 is a deficient number, since it is larger than the sum of its proper divisors (17763654181).

52991986539 is a wasteful number, since it uses less digits than its factorization.

52991986539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24914669.

The product of its digits is 47239200, while the sum is 66.

The spelling of 52991986539 in words is "fifty-two billion, nine hundred ninety-one million, nine hundred eighty-six thousand, five hundred thirty-nine".