405641240403 has 16 divisors (see below), whose sum is σ = 618667514880. Its totient is φ = 231589670976.

The previous prime is 405641240299. The next prime is 405641240419. The reversal of 405641240403 is 304042146504.

It is a happy number.

It is not a de Polignac number, because 405641240403 - 2⁹ = 405641239891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405641240423) 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, 8530875 + ... + 8578292.

It is an arithmetic number, because the mean of its divisors is an integer number (38666719680).

Almost surely, 2^405641240403 is an apocalyptic number.

405641240403 is a deficient number, since it is larger than the sum of its proper divisors (213026274477).

405641240403 is a wasteful number, since it uses less digits than its factorization.

405641240403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17110306.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 405641240403 its reverse (304042146504), we get a palindrome (709683386907).

The spelling of 405641240403 in words is "four hundred five billion, six hundred forty-one million, two hundred forty thousand, four hundred three".