21743321204473 has 8 divisors (see below), whose sum is σ = 23929898157216. Its totient is φ = 19591729483200.

The previous prime is 21743321204383. The next prime is 21743321204489. The reversal of 21743321204473 is 37440212334712.

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

It is a cyclic number.

It is not a de Polignac number, because 21743321204473 - 2²⁵ = 21743287650041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21743321204873) 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, 8746306563 + ... + 8746309048.

It is an arithmetic number, because the mean of its divisors is an integer number (2991237269652).

Almost surely, 2^{21743321204473} is an apocalyptic number.

It is an amenable number.

21743321204473 is a deficient number, since it is larger than the sum of its proper divisors (2186576952743).

21743321204473 is a wasteful number, since it uses less digits than its factorization.

21743321204473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17492615735.

The product of its (nonzero) digits is 677376, while the sum is 43.

The spelling of 21743321204473 in words is "twenty-one trillion, seven hundred forty-three billion, three hundred twenty-one million, two hundred four thousand, four hundred seventy-three".