421754320711769 has 2 divisors, whose sum is σ = 421754320711770. Its totient is φ = 421754320711768.

The previous prime is 421754320711753. The next prime is 421754320711837. The reversal of 421754320711769 is 967117023457124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407935168734025 + 13819151977744 = 20197405^2 + 3717412^2 .

It is a cyclic number.

It is not a de Polignac number, because 421754320711769 - 2⁴ = 421754320711753 is a prime.

It is a super-2 number, since 2×421754320711769² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (421754320741769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210877160355884 + 210877160355885.

It is an arithmetic number, because the mean of its divisors is an integer number (210877160355885).

Almost surely, 2^{421754320711769} is an apocalyptic number.

It is an amenable number.

421754320711769 is a deficient number, since it is larger than the sum of its proper divisors (1).

421754320711769 is an equidigital number, since it uses as much as digits as its factorization.

421754320711769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 421754320711769 in words is "four hundred twenty-one trillion, seven hundred fifty-four billion, three hundred twenty million, seven hundred eleven thousand, seven hundred sixty-nine".