44107765661 has 2 divisors, whose sum is σ = 44107765662. Its totient is φ = 44107765660.

The previous prime is 44107765649. The next prime is 44107765679. The reversal of 44107765661 is 16656770144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44018557636 + 89208025 = 209806^2 + 9445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44107765661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44107765621) 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 as a sum of consecutive naturals, namely, 22053882830 + 22053882831.

It is an arithmetic number, because the mean of its divisors is an integer number (22053882831).

Almost surely, 2^44107765661 is an apocalyptic number.

It is an amenable number.

44107765661 is a deficient number, since it is larger than the sum of its proper divisors (1).

44107765661 is an equidigital number, since it uses as much as digits as its factorization.

44107765661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 44107765661 in words is "forty-four billion, one hundred seven million, seven hundred sixty-five thousand, six hundred sixty-one".