5440666145 has 16 divisors (see below), whose sum is σ = 6914633040. Its totient is φ = 4095442944.

The previous prime is 5440666139. The next prime is 5440666151. The reversal of 5440666145 is 5416660445.

It is an interprime number because it is at equal distance from previous prime (5440666139) and next prime (5440666151).

It can be written as a sum of positive squares in 8 ways, for example, as 1463598049 + 3977068096 = 38257^2 + 63064^2 .

It is a cyclic number.

It is not a de Polignac number, because 5440666145 - 2¹⁰ = 5440665121 is a prime.

It is a super-2 number, since 2×5440666145² = 59201696202698322050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 519521 + ... + 529889.

It is an arithmetic number, because the mean of its divisors is an integer number (432164565).

Almost surely, 2^5440666145 is an apocalyptic number.

It is an amenable number.

5440666145 is a deficient number, since it is larger than the sum of its proper divisors (1473966895).

5440666145 is a wasteful number, since it uses less digits than its factorization.

5440666145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16564.

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 5440666145 is about 73760.8713682261. The cubic root of 5440666145 is about 1758.8036533377.

The spelling of 5440666145 in words is "five billion, four hundred forty million, six hundred sixty-six thousand, one hundred forty-five".