56601001066664 has 8 divisors (see below), whose sum is σ = 106126877000010. Its totient is φ = 28300500533328.

The previous prime is 56601001066661. The next prime is 56601001066693. The reversal of 56601001066664 is 46666010010665.

It can be written as a sum of positive squares in only one way, i.e., 41295301004164 + 15305700062500 = 6426142^2 + 3912250^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (56601001066661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3537562566659 + ... + 3537562566674.

Almost surely, 2^{56601001066664} is an apocalyptic number.

It is an amenable number.

56601001066664 is a deficient number, since it is larger than the sum of its proper divisors (49525875933346).

56601001066664 is a wasteful number, since it uses less digits than its factorization.

56601001066664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075125133339 (or 7075125133335 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The spelling of 56601001066664 in words is "fifty-six trillion, six hundred one billion, one million, sixty-six thousand, six hundred sixty-four".