421754320711773 has 24 divisors (see below), whose sum is σ = 720237263616000. Its totient is φ = 232692039012384.

The previous prime is 421754320711769. The next prime is 421754320711837. The reversal of 421754320711773 is 377117023457124.

421754320711773 is a `hidden beast` number, since 4 + 2 + 1 + 7 + 543 + 20 + 7 + 1 + 1 + 7 + 73 = 666.

It is not a de Polignac number, because 421754320711773 - 2² = 421754320711769 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421754320711723) 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, 115422636573 + ... + 115422640226.

It is an arithmetic number, because the mean of its divisors is an integer number (30009885984000).

Almost surely, 2^{421754320711773} is an apocalyptic number.

It is an amenable number.

421754320711773 is a deficient number, since it is larger than the sum of its proper divisors (298482942904227).

421754320711773 is a wasteful number, since it uses less digits than its factorization.

421754320711773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230845276841 (or 230845276838 counting only the distinct ones).

The product of its (nonzero) digits is 6914880, while the sum is 54.

The spelling of 421754320711773 in words is "four hundred twenty-one trillion, seven hundred fifty-four billion, three hundred twenty million, seven hundred eleven thousand, seven hundred seventy-three".