9420645430249 has 2 divisors, whose sum is σ = 9420645430250. Its totient is φ = 9420645430248.

The previous prime is 9420645430247. The next prime is 9420645430253. The reversal of 9420645430249 is 9420345460249.

9420645430249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9402778296025 + 17867134224 = 3066395^2 + 133668^2 .

It is a cyclic number.

It is not a de Polignac number, because 9420645430249 - 2¹ = 9420645430247 is a prime.

Together with 9420645430247, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 9420645430196 and 9420645430205.

It is not a weakly prime, because it can be changed into another prime (9420645430247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4710322715124 + 4710322715125.

It is an arithmetic number, because the mean of its divisors is an integer number (4710322715125).

Almost surely, 2^{9420645430249} is an apocalyptic number.

It is an amenable number.

9420645430249 is a deficient number, since it is larger than the sum of its proper divisors (1).

9420645430249 is an equidigital number, since it uses as much as digits as its factorization.

9420645430249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 52.

The spelling of 9420645430249 in words is "nine trillion, four hundred twenty billion, six hundred forty-five million, four hundred thirty thousand, two hundred forty-nine".