420631302851 has 2 divisors, whose sum is σ = 420631302852. Its totient is φ = 420631302850.

The previous prime is 420631302841. The next prime is 420631302857. The reversal of 420631302851 is 158203136024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420631302851 is a prime.

It is not a weakly prime, because it can be changed into another prime (420631302857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210315651425 + 210315651426.

It is an arithmetic number, because the mean of its divisors is an integer number (210315651426).

Almost surely, 2^420631302851 is an apocalyptic number.

420631302851 is a deficient number, since it is larger than the sum of its proper divisors (1).

420631302851 is an equidigital number, since it uses as much as digits as its factorization.

420631302851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 420631302851 its reverse (158203136024), we get a palindrome (578834438875).

The spelling of 420631302851 in words is "four hundred twenty billion, six hundred thirty-one million, three hundred two thousand, eight hundred fifty-one".