5440478681519 has 4 divisors (see below), whose sum is σ = 6217689921744. Its totient is φ = 4663267441296.

The previous prime is 5440478681509. The next prime is 5440478681531. The reversal of 5440478681519 is 9151868740445.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5440478681519 - 2²⁸ = 5440210246063 is a prime.

It is a super-2 number, since 2×5440478681519² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5440478681509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388605620102 + ... + 388605620115.

It is an arithmetic number, because the mean of its divisors is an integer number (1554422480436).

Almost surely, 2^{5440478681519} is an apocalyptic number.

5440478681519 is a deficient number, since it is larger than the sum of its proper divisors (777211240225).

5440478681519 is an equidigital number, since it uses as much as digits as its factorization.

5440478681519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777211240224.

The product of its (nonzero) digits is 38707200, while the sum is 62.

The spelling of 5440478681519 in words is "five trillion, four hundred forty billion, four hundred seventy-eight million, six hundred eighty-one thousand, five hundred nineteen".