40041484181 has 4 divisors (see below), whose sum is σ = 40108332000. Its totient is φ = 39974636364.

The previous prime is 40041484177. The next prime is 40041484199. The reversal of 40041484181 is 18148414004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40041484181 - 2² = 40041484177 is a prime.

It is a super-2 number, since 2×40041484181² (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 (40041484111) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 33423011 + ... + 33424208.

It is an arithmetic number, because the mean of its divisors is an integer number (10027083000).

Almost surely, 2^40041484181 is an apocalyptic number.

It is an amenable number.

40041484181 is a deficient number, since it is larger than the sum of its proper divisors (66847819).

40041484181 is an equidigital number, since it uses as much as digits as its factorization.

40041484181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66847818.

The product of its (nonzero) digits is 16384, while the sum is 35.

Adding to 40041484181 its reverse (18148414004), we get a palindrome (58189898185).

The spelling of 40041484181 in words is "forty billion, forty-one million, four hundred eighty-four thousand, one hundred eighty-one".