44109779191 has 2 divisors, whose sum is σ = 44109779192. Its totient is φ = 44109779190.

The previous prime is 44109779183. The next prime is 44109779257. The reversal of 44109779191 is 19197790144.

It is a happy number.

44109779191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44109779191 - 2³ = 44109779183 is a prime.

It is a super-2 number, since 2×44109779191² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44109719191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22054889595 + 22054889596.

It is an arithmetic number, because the mean of its divisors is an integer number (22054889596).

Almost surely, 2^44109779191 is an apocalyptic number.

44109779191 is a deficient number, since it is larger than the sum of its proper divisors (1).

44109779191 is an equidigital number, since it uses as much as digits as its factorization.

44109779191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 571536, while the sum is 52.

The spelling of 44109779191 in words is "forty-four billion, one hundred nine million, seven hundred seventy-nine thousand, one hundred ninety-one".