21014415541 has 8 divisors (see below), whose sum is σ = 24058687680. Its totient is φ = 17980696608.

The previous prime is 21014415533. The next prime is 21014415601. The reversal of 21014415541 is 14551441012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21014415541 - 2³ = 21014415533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21014412541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2634031 + ... + 2641996.

It is an arithmetic number, because the mean of its divisors is an integer number (3007335960).

Almost surely, 2^21014415541 is an apocalyptic number.

It is an amenable number.

21014415541 is a deficient number, since it is larger than the sum of its proper divisors (3044272139).

21014415541 is an equidigital number, since it uses as much as digits as its factorization.

21014415541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5276603.

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 21014415541 its reverse (14551441012), we get a palindrome (35565856553).

The spelling of 21014415541 in words is "twenty-one billion, fourteen million, four hundred fifteen thousand, five hundred forty-one".