406694488824865 has 32 divisors (see below), whose sum is σ = 498234243317760. Its totient is φ = 318599909168064.

The previous prime is 406694488824863. The next prime is 406694488824917. The reversal of 406694488824865 is 568428884496604.

It is a cyclic number.

It is not a de Polignac number, because 406694488824865 - 2¹ = 406694488824863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406694488824863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91256292 + ... + 95609098.

It is an arithmetic number, because the mean of its divisors is an integer number (15569820103680).

Almost surely, 2^{406694488824865} is an apocalyptic number.

It is an amenable number.

406694488824865 is a deficient number, since it is larger than the sum of its proper divisors (91539754492895).

406694488824865 is a wasteful number, since it uses less digits than its factorization.

406694488824865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354101.

The product of its (nonzero) digits is 20384317440, while the sum is 82.

The spelling of 406694488824865 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-five".