56993762066018 has 18 divisors (see below), whose sum is σ = 85717224597249. Its totient is φ = 28421553029592.

The previous prime is 56993762065991. The next prime is 56993762066027. The reversal of 56993762066018 is 81066026739965.

It can be written as a sum of positive squares in 2 ways, for example, as 52699861124089 + 4293900941929 = 7259467^2 + 2072173^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=5338247.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 4153149305 + ... + 4153163027.

Almost surely, 2^{56993762066018} is an apocalyptic number.

56993762066018 is a deficient number, since it is larger than the sum of its proper divisors (28723462531231).

56993762066018 is an frugal number, since it uses more digits than its factorization.

56993762066018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28226 (or 14114 counting only the distinct ones).

The product of its (nonzero) digits is 176359680, while the sum is 68.

The spelling of 56993762066018 in words is "fifty-six trillion, nine hundred ninety-three billion, seven hundred sixty-two million, sixty-six thousand, eighteen".