21404550060005 has 24 divisors (see below), whose sum is σ = 29966115491712. Its totient is φ = 14677405697808.

The previous prime is 21404550059989. The next prime is 21404550060011. The reversal of 21404550060005 is 50006005540412.

It is not a de Polignac number, because 21404550060005 - 2⁴ = 21404550059989 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 127270937 + ... + 127439006.

It is an arithmetic number, because the mean of its divisors is an integer number (1248588145488).

Almost surely, 2^{21404550060005} is an apocalyptic number.

It is an amenable number.

21404550060005 is a deficient number, since it is larger than the sum of its proper divisors (8561565431707).

21404550060005 is an frugal number, since it uses more digits than its factorization.

21404550060005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254709983 (or 254709955 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The spelling of 21404550060005 in words is "twenty-one trillion, four hundred four billion, five hundred fifty million, sixty thousand, five".