400433868667 has 16 divisors (see below), whose sum is σ = 497654815680. Its totient is φ = 314308297728.

The previous prime is 400433868647. The next prime is 400433868677. The reversal of 400433868667 is 766868334004.

It is a cyclic number.

It is not a de Polignac number, because 400433868667 - 2¹¹ = 400433866619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400433868617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45468442 + ... + 45477247.

It is an arithmetic number, because the mean of its divisors is an integer number (31103425980).

Almost surely, 2^400433868667 is an apocalyptic number.

400433868667 is a deficient number, since it is larger than the sum of its proper divisors (97220947013).

400433868667 is a wasteful number, since it uses less digits than its factorization.

400433868667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90945750.

The product of its (nonzero) digits is 13934592, while the sum is 55.

The spelling of 400433868667 in words is "four hundred billion, four hundred thirty-three million, eight hundred sixty-eight thousand, six hundred sixty-seven".