420544233601 has 2 divisors, whose sum is σ = 420544233602. Its totient is φ = 420544233600.

The previous prime is 420544233569. The next prime is 420544233623. The reversal of 420544233601 is 106332445024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355710852225 + 64833381376 = 596415^2 + 254624^2 .

It is a cyclic number.

It is not a de Polignac number, because 420544233601 - 2⁵ = 420544233569 is a prime.

It is not a weakly prime, because it can be changed into another prime (420544233101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210272116800 + 210272116801.

It is an arithmetic number, because the mean of its divisors is an integer number (210272116801).

Almost surely, 2^420544233601 is an apocalyptic number.

It is an amenable number.

420544233601 is a deficient number, since it is larger than the sum of its proper divisors (1).

420544233601 is an equidigital number, since it uses as much as digits as its factorization.

420544233601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 420544233601 its reverse (106332445024), we get a palindrome (526876678625).

The spelling of 420544233601 in words is "four hundred twenty billion, five hundred forty-four million, two hundred thirty-three thousand, six hundred one".