400464606066 has 64 divisors (see below), whose sum is σ = 917933472000. Its totient is φ = 114095702016.

The previous prime is 400464606037. The next prime is 400464606067. The reversal of 400464606066 is 660606464004.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400464606067) 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, 22178610 + ... + 22196658.

It is an arithmetic number, because the mean of its divisors is an integer number (14342710500).

Almost surely, 2^400464606066 is an apocalyptic number.

400464606066 is an abundant number, since it is smaller than the sum of its proper divisors (517468865934).

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

400464606066 is a wasteful number, since it uses less digits than its factorization.

400464606066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19523.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 400464606066 in words is "four hundred billion, four hundred sixty-four million, six hundred six thousand, sixty-six".