56478180549 has 16 divisors (see below), whose sum is σ = 86272423040. Its totient is φ = 32194333440.

The previous prime is 56478180533. The next prime is 56478180553. The reversal of 56478180549 is 94508187465.

It is not a de Polignac number, because 56478180549 - 2⁴ = 56478180533 is a prime.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56478180529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3279232 + ... + 3296409.

It is an arithmetic number, because the mean of its divisors is an integer number (5392026440).

Almost surely, 2^56478180549 is an apocalyptic number.

It is an amenable number.

56478180549 is a deficient number, since it is larger than the sum of its proper divisors (29794242491).

56478180549 is a wasteful number, since it uses less digits than its factorization.

56478180549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6576060.

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 56478180549 in words is "fifty-six billion, four hundred seventy-eight million, one hundred eighty thousand, five hundred forty-nine".