40441331261 has 8 divisors (see below), whose sum is σ = 43720358880. Its totient is φ = 37277357328.

The previous prime is 40441331251. The next prime is 40441331267. The reversal of 40441331261 is 16213314404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-40441331261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40441331267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28762691 + ... + 28764096.

It is an arithmetic number, because the mean of its divisors is an integer number (5465044860).

Almost surely, 2^40441331261 is an apocalyptic number.

It is an amenable number.

40441331261 is a deficient number, since it is larger than the sum of its proper divisors (3279027619).

40441331261 is a wasteful number, since it uses less digits than its factorization.

40441331261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57526843.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 40441331261 its reverse (16213314404), we get a palindrome (56654645665).

The spelling of 40441331261 in words is "forty billion, four hundred forty-one million, three hundred thirty-one thousand, two hundred sixty-one".