21113415413 has 8 divisors (see below), whose sum is σ = 21740679168. Its totient is φ = 20489132304.

The previous prime is 21113415397. The next prime is 21113415419. The reversal of 21113415413 is 31451431112.

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

It is a cyclic number.

It is not a de Polignac number, because 21113415413 - 2⁴ = 21113415397 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 (21113415419) 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, 730781 + ... + 759122.

It is an arithmetic number, because the mean of its divisors is an integer number (2717584896).

Almost surely, 2^21113415413 is an apocalyptic number.

It is an amenable number.

21113415413 is a deficient number, since it is larger than the sum of its proper divisors (627263755).

21113415413 is a wasteful number, since it uses less digits than its factorization.

21113415413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490323.

The product of its digits is 1440, while the sum is 26.

Adding to 21113415413 its reverse (31451431112), we get a palindrome (52564846525).

The spelling of 21113415413 in words is "twenty-one billion, one hundred thirteen million, four hundred fifteen thousand, four hundred thirteen".