44645665351489 has 2 divisors, whose sum is σ = 44645665351490. Its totient is φ = 44645665351488.

The previous prime is 44645665351447. The next prime is 44645665351499. The reversal of 44645665351489 is 98415356654644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28221774381889 + 16423890969600 = 5312417^2 + 4052640^2 .

It is a cyclic number.

It is not a de Polignac number, because 44645665351489 - 2⁴⁵ = 9461293262657 is a prime.

It is not a weakly prime, because it can be changed into another prime (44645665351429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22322832675744 + 22322832675745.

It is an arithmetic number, because the mean of its divisors is an integer number (22322832675745).

Almost surely, 2^{44645665351489} is an apocalyptic number.

It is an amenable number.

44645665351489 is a deficient number, since it is larger than the sum of its proper divisors (1).

44645665351489 is an equidigital number, since it uses as much as digits as its factorization.

44645665351489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992000, while the sum is 70.

The spelling of 44645665351489 in words is "forty-four trillion, six hundred forty-five billion, six hundred sixty-five million, three hundred fifty-one thousand, four hundred eighty-nine".