420830783641 has 2 divisors, whose sum is σ = 420830783642. Its totient is φ = 420830783640.

The previous prime is 420830783627. The next prime is 420830783669. The reversal of 420830783641 is 146387038024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375988486041 + 44842297600 = 613179^2 + 211760^2 .

It is a cyclic number.

It is not a de Polignac number, because 420830783641 - 2³³ = 412240849049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420830783591 and 420830783600.

It is not a weakly prime, because it can be changed into another prime (420830783621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210415391820 + 210415391821.

It is an arithmetic number, because the mean of its divisors is an integer number (210415391821).

Almost surely, 2^420830783641 is an apocalyptic number.

It is an amenable number.

420830783641 is a deficient number, since it is larger than the sum of its proper divisors (1).

420830783641 is an equidigital number, since it uses as much as digits as its factorization.

420830783641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 420830783641 in words is "four hundred twenty billion, eight hundred thirty million, seven hundred eighty-three thousand, six hundred forty-one".