21938700241304 has 128 divisors (see below), whose sum is σ = 52942823424000. Its totient is φ = 8271320400000.

The previous prime is 21938700241217. The next prime is 21938700241309. The reversal of 21938700241304 is 40314200783912.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21938700241309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 529912397 + ... + 529953795.

It is an arithmetic number, because the mean of its divisors is an integer number (413615808000).

Almost surely, 2^{21938700241304} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21938700241304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26471411712000).

21938700241304 is an abundant number, since it is smaller than the sum of its proper divisors (31004123182696).

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

21938700241304 is a wasteful number, since it uses less digits than its factorization.

21938700241304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69205 (or 69201 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 21938700241304 in words is "twenty-one trillion, nine hundred thirty-eight billion, seven hundred million, two hundred forty-one thousand, three hundred four".