40550515405 has 4 divisors (see below), whose sum is σ = 48660618492. Its totient is φ = 32440412320.

The previous prime is 40550515403. The next prime is 40550515409. The reversal of 40550515405 is 50451505504.

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 7051632676 + 33498882729 = 83974^2 + 183027^2 .

It is not a de Polignac number, because 40550515405 - 2¹ = 40550515403 is a prime.

It is a super-2 number, since 2×40550515405² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40550515403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4055051536 + ... + 4055051545.

It is an arithmetic number, because the mean of its divisors is an integer number (12165154623).

Almost surely, 2^40550515405 is an apocalyptic number.

It is an amenable number.

40550515405 is a deficient number, since it is larger than the sum of its proper divisors (8110103087).

40550515405 is an equidigital number, since it uses as much as digits as its factorization.

40550515405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8110103086.

The product of its (nonzero) digits is 50000, while the sum is 34.

Subtracting 40550515405 from its reverse (50451505504), we obtain a palindrome (9900990099).

The spelling of 40550515405 in words is "forty billion, five hundred fifty million, five hundred fifteen thousand, four hundred five".