66160767663 has 24 divisors (see below), whose sum is σ = 97644757392. Its totient is φ = 43152265728.

The previous prime is 66160767613. The next prime is 66160767697. The reversal of 66160767663 is 36676706166.

It is not a de Polignac number, because 66160767663 - 2¹² = 66160763567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66160767613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28081 + ... + 364842.

It is an arithmetic number, because the mean of its divisors is an integer number (4068531558).

Almost surely, 2^66160767663 is an apocalyptic number.

66160767663 is a deficient number, since it is larger than the sum of its proper divisors (31483989729).

66160767663 is a wasteful number, since it uses less digits than its factorization.

66160767663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393335 (or 393332 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 54.

The spelling of 66160767663 in words is "sixty-six billion, one hundred sixty million, seven hundred sixty-seven thousand, six hundred sixty-three".