420933897793 has 2 divisors, whose sum is σ = 420933897794. Its totient is φ = 420933897792.

The previous prime is 420933897667. The next prime is 420933897809. The reversal of 420933897793 is 397798339024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248091655744 + 172842242049 = 498088^2 + 415743^2 .

It is a cyclic number.

It is not a de Polignac number, because 420933897793 - 2¹³ = 420933889601 is a prime.

It is a super-2 number, since 2×420933897793² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420933897493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210466948896 + 210466948897.

It is an arithmetic number, because the mean of its divisors is an integer number (210466948897).

Almost surely, 2^420933897793 is an apocalyptic number.

It is an amenable number.

420933897793 is a deficient number, since it is larger than the sum of its proper divisors (1).

420933897793 is an equidigital number, since it uses as much as digits as its factorization.

420933897793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61725888, while the sum is 64.

The spelling of 420933897793 in words is "four hundred twenty billion, nine hundred thirty-three million, eight hundred ninety-seven thousand, seven hundred ninety-three".