406694488824863 has 2 divisors, whose sum is σ = 406694488824864. Its totient is φ = 406694488824862.

The previous prime is 406694488824859. The next prime is 406694488824917. The reversal of 406694488824863 is 368428884496604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406694488824863 - 2² = 406694488824859 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406694488824853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203347244412431 + 203347244412432.

It is an arithmetic number, because the mean of its divisors is an integer number (203347244412432).

Almost surely, 2^{406694488824863} is an apocalyptic number.

406694488824863 is a deficient number, since it is larger than the sum of its proper divisors (1).

406694488824863 is an equidigital number, since it uses as much as digits as its factorization.

406694488824863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12230590464, while the sum is 80.

The spelling of 406694488824863 in words is "four hundred six trillion, six hundred ninety-four billion, four hundred eighty-eight million, eight hundred twenty-four thousand, eight hundred sixty-three".