52808013947 has 4 divisors (see below), whose sum is σ = 56870168880. Its totient is φ = 48745859016.

The previous prime is 52808013943. The next prime is 52808013959. The reversal of 52808013947 is 74931080825.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52808013947 - 2² = 52808013943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52808013943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2031077447 + ... + 2031077472.

It is an arithmetic number, because the mean of its divisors is an integer number (14217542220).

Almost surely, 2^52808013947 is an apocalyptic number.

52808013947 is a deficient number, since it is larger than the sum of its proper divisors (4062154933).

52808013947 is a wasteful number, since it uses less digits than its factorization.

52808013947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062154932.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 52808013947 in words is "fifty-two billion, eight hundred eight million, thirteen thousand, nine hundred forty-seven".