400408650668 has 48 divisors (see below), whose sum is σ = 758288563200. Its totient is φ = 183906852864.

The previous prime is 400408650661. The next prime is 400408650743. The reversal of 400408650668 is 866056804004.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (400408650661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8919896 + ... + 8964672.

It is an arithmetic number, because the mean of its divisors is an integer number (15797678400).

Almost surely, 2^400408650668 is an apocalyptic number.

It is an amenable number.

400408650668 is a deficient number, since it is larger than the sum of its proper divisors (357879912532).

400408650668 is a wasteful number, since it uses less digits than its factorization.

400408650668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45626 (or 45624 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 400408650668 in words is "four hundred billion, four hundred eight million, six hundred fifty thousand, six hundred sixty-eight".