21301434415 has 8 divisors (see below), whose sum is σ = 25583012208. Its totient is φ = 17026953600.

The previous prime is 21301434379. The next prime is 21301434437. The reversal of 21301434415 is 51443410312.

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

It is not a de Polignac number, because 21301434415 - 2¹¹ = 21301432367 is a prime.

It is a super-2 number, since 2×21301434415² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1767637 + ... + 1779646.

It is an arithmetic number, because the mean of its divisors is an integer number (3197876526).

Almost surely, 2^21301434415 is an apocalyptic number.

21301434415 is a deficient number, since it is larger than the sum of its proper divisors (4281577793).

21301434415 is a wasteful number, since it uses less digits than its factorization.

21301434415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3548489.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21301434415 its reverse (51443410312), we get a palindrome (72744844727).

The spelling of 21301434415 in words is "twenty-one billion, three hundred one million, four hundred thirty-four thousand, four hundred fifteen".