406406603263 has 2 divisors, whose sum is σ = 406406603264. Its totient is φ = 406406603262.

The previous prime is 406406603221. The next prime is 406406603279. The reversal of 406406603263 is 362306604604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406406603263 - 2²⁵ = 406373048831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406406603203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203203301631 + 203203301632.

It is an arithmetic number, because the mean of its divisors is an integer number (203203301632).

Almost surely, 2^406406603263 is an apocalyptic number.

406406603263 is a deficient number, since it is larger than the sum of its proper divisors (1).

406406603263 is an equidigital number, since it uses as much as digits as its factorization.

406406603263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 40.

The spelling of 406406603263 in words is "four hundred six billion, four hundred six million, six hundred three thousand, two hundred sixty-three".