405660530053 has 4 divisors (see below), whose sum is σ = 405677222860. Its totient is φ = 405643837248.

The previous prime is 405660530017. The next prime is 405660530069. The reversal of 405660530053 is 350035066504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 207045020484 + 198615509569 = 455022^2 + 445663^2 .

It is a cyclic number.

It is not a de Polignac number, because 405660530053 - 2⁹ = 405660529541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405660529994 and 405660530021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405660530083) 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 3 ways as a sum of consecutive naturals, for example, 8309898 + ... + 8358571.

It is an arithmetic number, because the mean of its divisors is an integer number (101419305715).

Almost surely, 2^405660530053 is an apocalyptic number.

It is an amenable number.

405660530053 is a deficient number, since it is larger than the sum of its proper divisors (16692807).

405660530053 is a wasteful number, since it uses less digits than its factorization.

405660530053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16692806.

The product of its (nonzero) digits is 162000, while the sum is 37.

Adding to 405660530053 its reverse (350035066504), we get a palindrome (755695596557).

The spelling of 405660530053 in words is "four hundred five billion, six hundred sixty million, five hundred thirty thousand, fifty-three".