5440473378681 has 16 divisors (see below), whose sum is σ = 7923953031168. Its totient is φ = 3292866090000.

The previous prime is 5440473378677. The next prime is 5440473378727. The reversal of 5440473378681 is 1868733740445.

It is not a de Polignac number, because 5440473378681 - 2² = 5440473378677 is a prime.

It is a super-2 number, since 2×5440473378681² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5440473378581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109737421 + ... + 109786986.

It is an arithmetic number, because the mean of its divisors is an integer number (495247064448).

Almost surely, 2^{5440473378681} is an apocalyptic number.

It is an amenable number.

5440473378681 is a deficient number, since it is larger than the sum of its proper divisors (2483479652487).

5440473378681 is a wasteful number, since it uses less digits than its factorization.

5440473378681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219525172.

The product of its (nonzero) digits is 54190080, while the sum is 60.

The spelling of 5440473378681 in words is "five trillion, four hundred forty billion, four hundred seventy-three million, three hundred seventy-eight thousand, six hundred eighty-one".