405442432111 has 16 divisors (see below), whose sum is σ = 413059237920. Its totient is φ = 397851194880.

The previous prime is 405442432103. The next prime is 405442432133. The reversal of 405442432111 is 111234244504.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 405442432111 - 2³ = 405442432103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405442432141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137297011 + ... + 137299963.

It is an arithmetic number, because the mean of its divisors is an integer number (25816202370).

Almost surely, 2^405442432111 is an apocalyptic number.

405442432111 is a deficient number, since it is larger than the sum of its proper divisors (7616805809).

405442432111 is a wasteful number, since it uses less digits than its factorization.

405442432111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 405442432111 its reverse (111234244504), we get a palindrome (516676676615).

The spelling of 405442432111 in words is "four hundred five billion, four hundred forty-two million, four hundred thirty-two thousand, one hundred eleven".