40020435155 has 16 divisors (see below), whose sum is σ = 48458995200. Its totient is φ = 31727386080.

The previous prime is 40020435139. The next prime is 40020435163. The reversal of 40020435155 is 55153402004.

It is not a de Polignac number, because 40020435155 - 2⁴ = 40020435139 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 428456 + ... + 513434.

It is an arithmetic number, because the mean of its divisors is an integer number (3028687200).

Almost surely, 2^40020435155 is an apocalyptic number.

40020435155 is a deficient number, since it is larger than the sum of its proper divisors (8438560045).

40020435155 is a wasteful number, since it uses less digits than its factorization.

40020435155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85834.

The product of its (nonzero) digits is 12000, while the sum is 29.

Adding to 40020435155 its reverse (55153402004), we get a palindrome (95173837159).

The spelling of 40020435155 in words is "forty billion, twenty million, four hundred thirty-five thousand, one hundred fifty-five".