56561743767 has 8 divisors (see below), whose sum is σ = 75549613824. Its totient is φ = 37640851448.

The previous prime is 56561743741. The next prime is 56561743787. The reversal of 56561743767 is 76734716565.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56561743767 - 2¹² = 56561739671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56561743717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16742463 + ... + 16745840.

It is an arithmetic number, because the mean of its divisors is an integer number (9443701728).

Almost surely, 2^56561743767 is an apocalyptic number.

56561743767 is a deficient number, since it is larger than the sum of its proper divisors (18987870057).

56561743767 is a wasteful number, since it uses less digits than its factorization.

56561743767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33488869.

The product of its digits is 22226400, while the sum is 57.

The spelling of 56561743767 in words is "fifty-six billion, five hundred sixty-one million, seven hundred forty-three thousand, seven hundred sixty-seven".