421412513450317 has 2 divisors, whose sum is σ = 421412513450318. Its totient is φ = 421412513450316.

The previous prime is 421412513450297. The next prime is 421412513450323. The reversal of 421412513450317 is 713054315214124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372245084671716 + 49167428778601 = 19293654^2 + 7011949^2 .

It is a cyclic number.

It is not a de Polignac number, because 421412513450317 - 2¹⁵ = 421412513417549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421412513450717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210706256725158 + 210706256725159.

It is an arithmetic number, because the mean of its divisors is an integer number (210706256725159).

Almost surely, 2^{421412513450317} is an apocalyptic number.

It is an amenable number.

421412513450317 is a deficient number, since it is larger than the sum of its proper divisors (1).

421412513450317 is an equidigital number, since it uses as much as digits as its factorization.

421412513450317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 421412513450317 in words is "four hundred twenty-one trillion, four hundred twelve billion, five hundred thirteen million, four hundred fifty thousand, three hundred seventeen".