420650303981 has 2 divisors, whose sum is σ = 420650303982. Its totient is φ = 420650303980.

The previous prime is 420650303923. The next prime is 420650304001. The reversal of 420650303981 is 189303056024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377278492900 + 43371811081 = 614230^2 + 208259^2 .

It is a cyclic number.

It is not a de Polignac number, because 420650303981 - 2⁶ = 420650303917 is a prime.

It is a super-2 number, since 2×420650303981² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420650303081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210325151990 + 210325151991.

It is an arithmetic number, because the mean of its divisors is an integer number (210325151991).

Almost surely, 2^420650303981 is an apocalyptic number.

It is an amenable number.

420650303981 is a deficient number, since it is larger than the sum of its proper divisors (1).

420650303981 is an equidigital number, since it uses as much as digits as its factorization.

420650303981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 420650303981 in words is "four hundred twenty billion, six hundred fifty million, three hundred three thousand, nine hundred eighty-one".