40040441155 has 64 divisors (see below), whose sum is σ = 57552768000. Its totient is φ = 26356907520.

The previous prime is 40040441117. The next prime is 40040441159. The reversal of 40040441155 is 55114404004.

It is not a de Polignac number, because 40040441155 - 2¹³ = 40040432963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40040441159) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20543121 + ... + 20545069.

It is an arithmetic number, because the mean of its divisors is an integer number (899262000).

Almost surely, 2^40040441155 is an apocalyptic number.

40040441155 is a deficient number, since it is larger than the sum of its proper divisors (17512326845).

40040441155 is a wasteful number, since it uses less digits than its factorization.

40040441155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 40040441155 its reverse (55114404004), we get a palindrome (95154845159).

The spelling of 40040441155 in words is "forty billion, forty million, four hundred forty-one thousand, one hundred fifty-five".