420077038217 has 2 divisors, whose sum is σ = 420077038218. Its totient is φ = 420077038216.

The previous prime is 420077038193. The next prime is 420077038223. The reversal of 420077038217 is 712830770024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418873017616 + 1204020601 = 647204^2 + 34699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420077038217 is a prime.

It is not a weakly prime, because it can be changed into another prime (420077038267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210038519108 + 210038519109.

It is an arithmetic number, because the mean of its divisors is an integer number (210038519109).

Almost surely, 2^420077038217 is an apocalyptic number.

It is an amenable number.

420077038217 is a deficient number, since it is larger than the sum of its proper divisors (1).

420077038217 is an equidigital number, since it uses as much as digits as its factorization.

420077038217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131712, while the sum is 41.

The spelling of 420077038217 in words is "four hundred twenty billion, seventy-seven million, thirty-eight thousand, two hundred seventeen".