40441776065 has 4 divisors (see below), whose sum is σ = 48530131284. Its totient is φ = 32353420848.

The previous prime is 40441776043. The next prime is 40441776073. The reversal of 40441776065 is 56067714404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22861137601 + 17580638464 = 151199^2 + 132592^2 .

It is a cyclic number.

It is not a de Polignac number, because 40441776065 - 2²² = 40437581761 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4044177602 + ... + 4044177611.

It is an arithmetic number, because the mean of its divisors is an integer number (12132532821).

Almost surely, 2^40441776065 is an apocalyptic number.

It is an amenable number.

40441776065 is a deficient number, since it is larger than the sum of its proper divisors (8088355219).

40441776065 is an equidigital number, since it uses as much as digits as its factorization.

40441776065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088355218.

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 40441776065 in words is "forty billion, four hundred forty-one million, seven hundred seventy-six thousand, sixty-five".