13550120423 has 4 divisors (see below), whose sum is σ = 15485851920. Its totient is φ = 11614388928.

The previous prime is 13550120417. The next prime is 13550120443. The reversal of 13550120423 is 32402105531.

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 13550120423 - 2¹⁶ = 13550054887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13550120392 and 13550120401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13550120443) 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, 967865738 + ... + 967865751.

It is an arithmetic number, because the mean of its divisors is an integer number (3871462980).

Almost surely, 2^13550120423 is an apocalyptic number.

13550120423 is a deficient number, since it is larger than the sum of its proper divisors (1935731497).

13550120423 is an equidigital number, since it uses as much as digits as its factorization.

13550120423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935731496.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13550120423 its reverse (32402105531), we get a palindrome (45952225954).

The spelling of 13550120423 in words is "thirteen billion, five hundred fifty million, one hundred twenty thousand, four hundred twenty-three".