420273072889 has 2 divisors, whose sum is σ = 420273072890. Its totient is φ = 420273072888.

The previous prime is 420273072887. The next prime is 420273072911. The reversal of 420273072889 is 988270372024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391740795664 + 28532277225 = 625892^2 + 168915^2 .

It is a cyclic number.

It is not a de Polignac number, because 420273072889 - 2¹ = 420273072887 is a prime.

Together with 420273072887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (420273072887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210136536444 + 210136536445.

It is an arithmetic number, because the mean of its divisors is an integer number (210136536445).

Almost surely, 2^420273072889 is an apocalyptic number.

It is an amenable number.

420273072889 is a deficient number, since it is larger than the sum of its proper divisors (1).

420273072889 is an equidigital number, since it uses as much as digits as its factorization.

420273072889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2709504, while the sum is 52.

The spelling of 420273072889 in words is "four hundred twenty billion, two hundred seventy-three million, seventy-two thousand, eight hundred eighty-nine".