420849784598807 has 2 divisors, whose sum is σ = 420849784598808. Its totient is φ = 420849784598806.

The previous prime is 420849784598741. The next prime is 420849784598821. The reversal of 420849784598807 is 708895487948024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420849784598807 - 2¹⁶ = 420849784533271 is a prime.

It is a super-2 number, since 2×420849784598807² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420849784598857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210424892299403 + 210424892299404.

It is an arithmetic number, because the mean of its divisors is an integer number (210424892299404).

Almost surely, 2^{420849784598807} is an apocalyptic number.

420849784598807 is a deficient number, since it is larger than the sum of its proper divisors (1).

420849784598807 is an equidigital number, since it uses as much as digits as its factorization.

420849784598807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10404495360, while the sum is 83.

The spelling of 420849784598807 in words is "four hundred twenty trillion, eight hundred forty-nine billion, seven hundred eighty-four million, five hundred ninety-eight thousand, eight hundred seven".