400065323164 has 24 divisors (see below), whose sum is σ = 754887698208. Its totient is φ = 184420610880.

The previous prime is 400065323111. The next prime is 400065323167. The reversal of 400065323164 is 461323560004.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4642792 + ... + 4728175.

It is an arithmetic number, because the mean of its divisors is an integer number (31453654092).

Almost surely, 2^400065323164 is an apocalyptic number.

It is an amenable number.

400065323164 is a deficient number, since it is larger than the sum of its proper divisors (354822375044).

400065323164 is a wasteful number, since it uses less digits than its factorization.

400065323164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371805 (or 9371803 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 400065323164 its reverse (461323560004), we get a palindrome (861388883168).

The spelling of 400065323164 in words is "four hundred billion, sixty-five million, three hundred twenty-three thousand, one hundred sixty-four".