13163488533 has 18 divisors (see below), whose sum is σ = 20478468374. Its totient is φ = 8099844624.

The previous prime is 13163488531. The next prime is 13163488543. The reversal of 13163488533 is 33588436131.

13163488533 is a `hidden beast` number, since 1 + 3 + 1 + 6 + 34 + 88 + 533 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9113184369 + 4050304164 = 95463^2 + 63642^2 .

It is not a de Polignac number, because 13163488533 - 2¹ = 13163488531 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13163488531) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1235716 + ... + 1246322.

Almost surely, 2^13163488533 is an apocalyptic number.

13163488533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13163488533 is a deficient number, since it is larger than the sum of its proper divisors (7314979841).

13163488533 is an frugal number, since it uses more digits than its factorization.

13163488533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21233 (or 10623 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The spelling of 13163488533 in words is "thirteen billion, one hundred sixty-three million, four hundred eighty-eight thousand, five hundred thirty-three".