400243344111 has 12 divisors (see below), whose sum is σ = 622600757688. Its totient is φ = 246303596304.

The previous prime is 400243344043. The next prime is 400243344133. The reversal of 400243344111 is 111443342004.

400243344111 is a `hidden beast` number, since 4 + 0 + 0 + 243 + 3 + 4 + 411 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-400243344111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400243344311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1710441525 + ... + 1710441758.

It is an arithmetic number, because the mean of its divisors is an integer number (51883396474).

Almost surely, 2^400243344111 is an apocalyptic number.

400243344111 is a deficient number, since it is larger than the sum of its proper divisors (222357413577).

400243344111 is a wasteful number, since it uses less digits than its factorization.

400243344111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3420883302 (or 3420883299 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 400243344111 its reverse (111443342004), we get a palindrome (511686686115).

The spelling of 400243344111 in words is "four hundred billion, two hundred forty-three million, three hundred forty-four thousand, one hundred eleven".