21014033541 has 16 divisors (see below), whose sum is σ = 28403827200. Its totient is φ = 13817364080.

The previous prime is 21014033531. The next prime is 21014033627. The reversal of 21014033541 is 14533041012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21014033541 - 2¹⁰ = 21014032517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014033531) 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, 78706 + ... + 219596.

It is an arithmetic number, because the mean of its divisors is an integer number (1775239200).

Almost surely, 2^21014033541 is an apocalyptic number.

It is an amenable number.

21014033541 is a deficient number, since it is larger than the sum of its proper divisors (7389793659).

21014033541 is a wasteful number, since it uses less digits than its factorization.

21014033541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141576.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21014033541 its reverse (14533041012), we get a palindrome (35547074553).

The spelling of 21014033541 in words is "twenty-one billion, fourteen million, thirty-three thousand, five hundred forty-one".