40144404605 has 16 divisors (see below), whose sum is σ = 51027868080. Its totient is φ = 30214013952.

The previous prime is 40144404593. The next prime is 40144404611. The reversal of 40144404605 is 50640444104.

It can be written as a sum of positive squares in 8 ways, for example, as 5615703844 + 34528700761 = 74938^2 + 185819^2 .

It is a cyclic number.

It is not a de Polignac number, because 40144404605 - 2⁴ = 40144404589 is a prime.

It is a super-2 number, since 2×40144404605² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115211 + ... + 305879.

It is an arithmetic number, because the mean of its divisors is an integer number (3189241755).

Almost surely, 2^40144404605 is an apocalyptic number.

It is an amenable number.

40144404605 is a deficient number, since it is larger than the sum of its proper divisors (10883463475).

40144404605 is a wasteful number, since it uses less digits than its factorization.

40144404605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193168.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 40144404605 its reverse (50640444104), we get a palindrome (90784848709).

The spelling of 40144404605 in words is "forty billion, one hundred forty-four million, four hundred four thousand, six hundred five".