44415889913 has 2 divisors, whose sum is σ = 44415889914. Its totient is φ = 44415889912.

The previous prime is 44415889901. The next prime is 44415889943. The reversal of 44415889913 is 31998851444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39088057849 + 5327832064 = 197707^2 + 72992^2 .

It is a cyclic number.

It is not a de Polignac number, because 44415889913 - 2¹⁰ = 44415888889 is a prime.

It is not a weakly prime, because it can be changed into another prime (44415889943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22207944956 + 22207944957.

It is an arithmetic number, because the mean of its divisors is an integer number (22207944957).

Almost surely, 2^44415889913 is an apocalyptic number.

It is an amenable number.

44415889913 is a deficient number, since it is larger than the sum of its proper divisors (1).

44415889913 is an equidigital number, since it uses as much as digits as its factorization.

44415889913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 56.

The spelling of 44415889913 in words is "forty-four billion, four hundred fifteen million, eight hundred eighty-nine thousand, nine hundred thirteen".