538996533813 has 24 divisors (see below), whose sum is σ = 793821420288. Its totient is φ = 352292864352.

The previous prime is 538996533787. The next prime is 538996533857. The reversal of 538996533813 is 318335699835.

538996533813 is a `hidden beast` number, since 5 + 3 + 8 + 9 + 96 + 533 + 8 + 1 + 3 = 666.

It is not a de Polignac number, because 538996533813 - 2¹² = 538996529717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538996533863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238756 + ... + 1065362.

It is an arithmetic number, because the mean of its divisors is an integer number (33075892512).

Almost surely, 2^538996533813 is an apocalyptic number.

538996533813 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

538996533813 is a deficient number, since it is larger than the sum of its proper divisors (254824886475).

538996533813 is a wasteful number, since it uses less digits than its factorization.

538996533813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 828033 (or 828030 counting only the distinct ones).

The product of its digits is 62985600, while the sum is 63.

The spelling of 538996533813 in words is "five hundred thirty-eight billion, nine hundred ninety-six million, five hundred thirty-three thousand, eight hundred thirteen".