420419179460881 has 2 divisors, whose sum is σ = 420419179460882. Its totient is φ = 420419179460880.

The previous prime is 420419179460807. The next prime is 420419179461133. The reversal of 420419179460881 is 188064971914024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218294242246656 + 202124937214225 = 14774784^2 + 14217065^2 .

It is a cyclic number.

It is not a de Polignac number, because 420419179460881 - 2¹³ = 420419179452689 is a prime.

It is a super-2 number, since 2×420419179460881² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420419179464881) 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, 210209589730440 + 210209589730441.

It is an arithmetic number, because the mean of its divisors is an integer number (210209589730441).

Almost surely, 2^{420419179460881} is an apocalyptic number.

It is an amenable number.

420419179460881 is a deficient number, since it is larger than the sum of its proper divisors (1).

420419179460881 is an equidigital number, since it uses as much as digits as its factorization.

420419179460881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27869184, while the sum is 64.

The spelling of 420419179460881 in words is "four hundred twenty trillion, four hundred nineteen billion, one hundred seventy-nine million, four hundred sixty thousand, eight hundred eighty-one".