405540204133 has 8 divisors (see below), whose sum is σ = 407707608728. Its totient is φ = 403373481984.

The previous prime is 405540204067. The next prime is 405540204137. The reversal of 405540204133 is 331402045504.

It can be written as a sum of positive squares in 4 ways, for example, as 215163316449 + 190376887684 = 463857^2 + 436322^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405540204133 - 2³⁷ = 268101250661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405540204095 and 405540204104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405540204137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044085 + ... + 1378837.

It is an arithmetic number, because the mean of its divisors is an integer number (50963451091).

Almost surely, 2^405540204133 is an apocalyptic number.

It is an amenable number.

405540204133 is a deficient number, since it is larger than the sum of its proper divisors (2167404595).

405540204133 is a wasteful number, since it uses less digits than its factorization.

405540204133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341223.

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 405540204133 its reverse (331402045504), we get a palindrome (736942249637).

The spelling of 405540204133 in words is "four hundred five billion, five hundred forty million, two hundred four thousand, one hundred thirty-three".