538565919287 has 4 divisors (see below), whose sum is σ = 587526457416. Its totient is φ = 489605381160.

The previous prime is 538565919271. The next prime is 538565919341. The reversal of 538565919287 is 782919565835.

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 538565919287 - 2⁴ = 538565919271 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538565919887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24480269048 + ... + 24480269069.

It is an arithmetic number, because the mean of its divisors is an integer number (146881614354).

Almost surely, 2^538565919287 is an apocalyptic number.

538565919287 is a deficient number, since it is larger than the sum of its proper divisors (48960538129).

538565919287 is a wasteful number, since it uses less digits than its factorization.

538565919287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48960538128.

The product of its digits is 163296000, while the sum is 68.

The spelling of 538565919287 in words is "five hundred thirty-eight billion, five hundred sixty-five million, nine hundred nineteen thousand, two hundred eighty-seven".