13541444121 has 16 divisors (see below), whose sum is σ = 18709004160. Its totient is φ = 8701795200.

The previous prime is 13541444099. The next prime is 13541444141. The reversal of 13541444121 is 12144414531.

It is not a de Polignac number, because 13541444121 - 2¹⁸ = 13541181977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13541444141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77205 + ... + 181778.

It is an arithmetic number, because the mean of its divisors is an integer number (1169312760).

Almost surely, 2^13541444121 is an apocalyptic number.

It is an amenable number.

13541444121 is a deficient number, since it is larger than the sum of its proper divisors (5167560039).

13541444121 is a wasteful number, since it uses less digits than its factorization.

13541444121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259616.

The product of its digits is 7680, while the sum is 30.

Adding to 13541444121 its reverse (12144414531), we get a palindrome (25685858652).

The spelling of 13541444121 in words is "thirteen billion, five hundred forty-one million, four hundred forty-four thousand, one hundred twenty-one".