66760741161 has 45 divisors (see below), whose sum is σ = 105323865933. Its totient is φ = 42136773480.

The previous prime is 66760741079. The next prime is 66760741163. The reversal of 66760741161 is 16114706766.

The square root of 66760741161 is 258381.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 66760741161 - 2²³ = 66752352553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66760741163) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 44182396 + ... + 44183906.

Almost surely, 2^66760741161 is an apocalyptic number.

66760741161 is the 258381-st square number.

66760741161 is the 129191-st centered octagonal number.

It is an amenable number.

66760741161 is a deficient number, since it is larger than the sum of its proper divisors (38563124772).

66760741161 is an frugal number, since it uses more digits than its factorization.

66760741161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 66760741161 in words is "sixty-six billion, seven hundred sixty million, seven hundred forty-one thousand, one hundred sixty-one".