44509905619 has 2 divisors, whose sum is σ = 44509905620. Its totient is φ = 44509905618.

The previous prime is 44509905593. The next prime is 44509905653. The reversal of 44509905619 is 91650990544.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44509905619 - 2⁹ = 44509905107 is a prime.

It is a super-2 number, since 2×44509905619² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44509905719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22254952809 + 22254952810.

It is an arithmetic number, because the mean of its divisors is an integer number (22254952810).

Almost surely, 2^44509905619 is an apocalyptic number.

44509905619 is a deficient number, since it is larger than the sum of its proper divisors (1).

44509905619 is an equidigital number, since it uses as much as digits as its factorization.

44509905619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The spelling of 44509905619 in words is "forty-four billion, five hundred nine million, nine hundred five thousand, six hundred nineteen".