421754320711753 has 2 divisors, whose sum is σ = 421754320711754. Its totient is φ = 421754320711752.

The previous prime is 421754320711723. The next prime is 421754320711769. The reversal of 421754320711753 is 357117023457124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 305459405895609 + 116294914816144 = 17477397^2 + 10784012^2 .

It is a cyclic number.

It is not a de Polignac number, because 421754320711753 - 2¹³ = 421754320703561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421754320711753.

It is not a weakly prime, because it can be changed into another prime (421754320711723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210877160355876 + 210877160355877.

It is an arithmetic number, because the mean of its divisors is an integer number (210877160355877).

Almost surely, 2^{421754320711753} is an apocalyptic number.

It is an amenable number.

421754320711753 is a deficient number, since it is larger than the sum of its proper divisors (1).

421754320711753 is an equidigital number, since it uses as much as digits as its factorization.

421754320711753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4939200, while the sum is 52.

The spelling of 421754320711753 in words is "four hundred twenty-one trillion, seven hundred fifty-four billion, three hundred twenty million, seven hundred eleven thousand, seven hundred fifty-three".