5440313666 has 4 divisors (see below), whose sum is σ = 8160470502. Its totient is φ = 2720156832.

The previous prime is 5440313653. The next prime is 5440313687. The reversal of 5440313666 is 6663130445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6663130445 = 5 ⋅1332626089.

It can be written as a sum of positive squares in only one way, i.e., 4195282441 + 1245031225 = 64771^2 + 35285^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1360078415 + ... + 1360078418.

Almost surely, 2^5440313666 is an apocalyptic number.

5440313666 is a deficient number, since it is larger than the sum of its proper divisors (2720156836).

5440313666 is a wasteful number, since it uses less digits than its factorization.

5440313666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720156835.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 5440313666 is about 73758.4819935985. The cubic root of 5440313666 is about 1758.7656705660.

The spelling of 5440313666 in words is "five billion, four hundred forty million, three hundred thirteen thousand, six hundred sixty-six".