405540411434 has 16 divisors (see below), whose sum is σ = 608882584200. Its totient is φ = 202579605504.

The previous prime is 405540411433. The next prime is 405540411443. The reversal of 405540411434 is 434114045504.

It can be written as a sum of positive squares in 4 ways, for example, as 245864247409 + 159676164025 = 495847^2 + 399595^2 .

It is a junction number, because it is equal to n+sod(n) for n = 405540411394 and 405540411403.

It is not an unprimeable number, because it can be changed into a prime (405540411431) 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 7 ways as a sum of consecutive naturals, for example, 23153072 + ... + 23170580.

Almost surely, 2^405540411434 is an apocalyptic number.

405540411434 is a deficient number, since it is larger than the sum of its proper divisors (203342172766).

405540411434 is a wasteful number, since it uses less digits than its factorization.

405540411434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27737.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 405540411434 its reverse (434114045504), we get a palindrome (839654456938).

The spelling of 405540411434 in words is "four hundred five billion, five hundred forty million, four hundred eleven thousand, four hundred thirty-four".