400065323166 has 48 divisors (see below), whose sum is σ = 868101453648. Its totient is φ = 133156310400.

The previous prime is 400065323111. The next prime is 400065323167. The reversal of 400065323166 is 661323560004.

400065323166 is a `hidden beast` number, since 400 + 0 + 65 + 32 + 3 + 166 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 400065323166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400065323167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36809265 + ... + 36820131.

It is an arithmetic number, because the mean of its divisors is an integer number (18085446951).

Almost surely, 2^400065323166 is an apocalyptic number.

400065323166 is an abundant number, since it is smaller than the sum of its proper divisors (468036130482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400065323166 is a wasteful number, since it uses less digits than its factorization.

400065323166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13737 (or 13734 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 400065323166 in words is "four hundred billion, sixty-five million, three hundred twenty-three thousand, one hundred sixty-six".