538840991727 has 6 divisors (see below), whose sum is σ = 778325876952. Its totient is φ = 359227327812.

The previous prime is 538840991719. The next prime is 538840991729. The reversal of 538840991727 is 727199048835.

538840991727 is a `hidden beast` number, since 53 + 8 + 8 + 409 + 9 + 172 + 7 = 666.

It is not a de Polignac number, because 538840991727 - 2³ = 538840991719 is a prime.

It is a super-2 number, since 2×538840991727² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538840991729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29935610643 + ... + 29935610660.

It is an arithmetic number, because the mean of its divisors is an integer number (129720979492).

Almost surely, 2^538840991727 is an apocalyptic number.

538840991727 is a deficient number, since it is larger than the sum of its proper divisors (239484885225).

538840991727 is a wasteful number, since it uses less digits than its factorization.

538840991727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59871221309 (or 59871221306 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 63.

The spelling of 538840991727 in words is "five hundred thirty-eight billion, eight hundred forty million, nine hundred ninety-one thousand, seven hundred twenty-seven".