56556376647 has 4 divisors (see below), whose sum is σ = 75408502200. Its totient is φ = 37704251096.

The previous prime is 56556376637. The next prime is 56556376649. The reversal of 56556376647 is 74667365565.

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 56556376647 - 2¹⁶ = 56556311111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56556376649) 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 3 ways as a sum of consecutive naturals, for example, 9426062772 + ... + 9426062777.

It is an arithmetic number, because the mean of its divisors is an integer number (18852125550).

Almost surely, 2^56556376647 is an apocalyptic number.

56556376647 is a deficient number, since it is larger than the sum of its proper divisors (18852125553).

56556376647 is a wasteful number, since it uses less digits than its factorization.

56556376647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18852125552.

The product of its digits is 95256000, while the sum is 60.

The spelling of 56556376647 in words is "fifty-six billion, five hundred fifty-six million, three hundred seventy-six thousand, six hundred forty-seven".