13138173553 has 4 divisors (see below), whose sum is σ = 13139791588. Its totient is φ = 13136555520.

The previous prime is 13138173547. The next prime is 13138173577. The reversal of 13138173553 is 35537183131.

13138173553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6296898609 + 6841274944 = 79353^2 + 82712^2 .

It is a cyclic number.

It is not a de Polignac number, because 13138173553 - 2¹³ = 13138165361 is a prime.

It is a super-2 number, since 2×13138173553² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13138173533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 796776 + ... + 813097.

It is an arithmetic number, because the mean of its divisors is an integer number (3284947897).

Almost surely, 2^13138173553 is an apocalyptic number.

It is an amenable number.

13138173553 is a deficient number, since it is larger than the sum of its proper divisors (1618035).

13138173553 is an equidigital number, since it uses as much as digits as its factorization.

13138173553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618034.

The product of its digits is 113400, while the sum is 40.

The spelling of 13138173553 in words is "thirteen billion, one hundred thirty-eight million, one hundred seventy-three thousand, five hundred fifty-three".