21700043641304 has 96 divisors (see below), whose sum is σ = 48881095286400. Its totient is φ = 8995623920640.

The previous prime is 21700043641303. The next prime is 21700043641313. The reversal of 21700043641304 is 40314634000712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21700043641301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24513152 + ... + 25382960.

It is an arithmetic number, because the mean of its divisors is an integer number (509178075900).

Almost surely, 2^{21700043641304} 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 21700043641304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24440547643200).

21700043641304 is an abundant number, since it is smaller than the sum of its proper divisors (27181051645096).

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

21700043641304 is a wasteful number, since it uses less digits than its factorization.

21700043641304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871913 (or 871902 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 21700043641304 in words is "twenty-one trillion, seven hundred billion, forty-three million, six hundred forty-one thousand, three hundred four".