420266648897 has 2 divisors, whose sum is σ = 420266648898. Its totient is φ = 420266648896.

The previous prime is 420266648807. The next prime is 420266648951. The reversal of 420266648897 is 798846662024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259851179536 + 160415469361 = 509756^2 + 400519^2 .

It is a cyclic number.

It is not a de Polignac number, because 420266648897 - 2¹⁸ = 420266386753 is a prime.

It is a super-2 number, since 2×420266648897² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420266648807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210133324448 + 210133324449.

It is an arithmetic number, because the mean of its divisors is an integer number (210133324449).

Almost surely, 2^420266648897 is an apocalyptic number.

It is an amenable number.

420266648897 is a deficient number, since it is larger than the sum of its proper divisors (1).

420266648897 is an equidigital number, since it uses as much as digits as its factorization.

420266648897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55738368, while the sum is 62.

The spelling of 420266648897 in words is "four hundred twenty billion, two hundred sixty-six million, six hundred forty-eight thousand, eight hundred ninety-seven".