21373727226404 has 48 divisors (see below), whose sum is σ = 45325768225920. Its totient is φ = 8614711169280.

The previous prime is 21373727226403. The next prime is 21373727226421. The reversal of 21373727226404 is 40462272737312.

It is not an unprimeable number, because it can be changed into a prime (21373727226403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146555507 + ... + 146701274.

It is an arithmetic number, because the mean of its divisors is an integer number (944286838040).

Almost surely, 2^{21373727226404} is an apocalyptic number.

It is an amenable number.

21373727226404 is an abundant number, since it is smaller than the sum of its proper divisors (23952040999516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21373727226404 is a wasteful number, since it uses less digits than its factorization.

21373727226404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293256948 (or 293256946 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 50.

The spelling of 21373727226404 in words is "twenty-one trillion, three hundred seventy-three billion, seven hundred twenty-seven million, two hundred twenty-six thousand, four hundred four".