56143427705 has 16 divisors (see below), whose sum is σ = 68838764544. Its totient is φ = 43937897280.

The previous prime is 56143427699. The next prime is 56143427719. The reversal of 56143427705 is 50772434165.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-56143427705 is a prime.

It is a super-3 number, since 3×56143427705³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 439499 + ... + 552671.

It is an arithmetic number, because the mean of its divisors is an integer number (4302422784).

Almost surely, 2^56143427705 is an apocalyptic number.

It is an amenable number.

56143427705 is a deficient number, since it is larger than the sum of its proper divisors (12695336839).

56143427705 is a wasteful number, since it uses less digits than its factorization.

56143427705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115336.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 56143427705 in words is "fifty-six billion, one hundred forty-three million, four hundred twenty-seven thousand, seven hundred five".