21124440414413 has 8 divisors (see below), whose sum is σ = 24502549223232. Its totient is φ = 17836414507296.

The previous prime is 21124440414401. The next prime is 21124440414421. The reversal of 21124440414413 is 31441404442112.

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

It is not a de Polignac number, because 21124440414413 - 2¹⁰ = 21124440413389 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 (21124440416413) 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, 22520724920 + ... + 22520725857.

It is an arithmetic number, because the mean of its divisors is an integer number (3062818652904).

Almost surely, 2^{21124440414413} is an apocalyptic number.

It is an amenable number.

21124440414413 is a deficient number, since it is larger than the sum of its proper divisors (3378108808819).

21124440414413 is an equidigital number, since it uses as much as digits as its factorization.

21124440414413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45041450851.

The product of its (nonzero) digits is 49152, while the sum is 35.

Adding to 21124440414413 its reverse (31441404442112), we get a palindrome (52565844856525).

The spelling of 21124440414413 in words is "twenty-one trillion, one hundred twenty-four billion, four hundred forty million, four hundred fourteen thousand, four hundred thirteen".