56661711068 has 12 divisors (see below), whose sum is σ = 99210499920. Its totient is φ = 28315853952.

The previous prime is 56661711031. The next prime is 56661711101. The reversal of 56661711068 is 86011716665.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 3741896 + ... + 3757007.

It is an arithmetic number, because the mean of its divisors is an integer number (8267541660).

Almost surely, 2^56661711068 is an apocalyptic number.

It is an amenable number.

56661711068 is a deficient number, since it is larger than the sum of its proper divisors (42548788852).

56661711068 is a wasteful number, since it uses less digits than its factorization.

56661711068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7500796 (or 7500794 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 56661711068 in words is "fifty-six billion, six hundred sixty-one million, seven hundred eleven thousand, sixty-eight".