14111111543521 has 16 divisors (see below), whose sum is σ = 15305811893568. Its totient is φ = 12956935334400.

The previous prime is 14111111543513. The next prime is 14111111543563. The reversal of 14111111543521 is 12534511111141.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 14111111543521 - 2³ = 14111111543513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14111111343521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90534226 + ... + 90689956.

It is an arithmetic number, because the mean of its divisors is an integer number (956613243348).

Almost surely, 2^{14111111543521} is an apocalyptic number.

It is an amenable number.

14111111543521 is a deficient number, since it is larger than the sum of its proper divisors (1194700350047).

14111111543521 is a wasteful number, since it uses less digits than its factorization.

14111111543521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285792.

The product of its digits is 2400, while the sum is 31.

Adding to 14111111543521 its reverse (12534511111141), we get a palindrome (26645622654662).

The spelling of 14111111543521 in words is "fourteen trillion, one hundred eleven billion, one hundred eleven million, five hundred forty-three thousand, five hundred twenty-one".