6660651133 has 2 divisors, whose sum is σ = 6660651134. Its totient is φ = 6660651132.

The previous prime is 6660651091. The next prime is 6660651161. The reversal of 6660651133 is 3311560666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4664616804 + 1996034329 = 68298^2 + 44677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6660651133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6660651092 and 6660651101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6660691133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3330325566 + 3330325567.

It is an arithmetic number, because the mean of its divisors is an integer number (3330325567).

Almost surely, 2^6660651133 is an apocalyptic number.

It is an amenable number.

6660651133 is a deficient number, since it is larger than the sum of its proper divisors (1).

6660651133 is an equidigital number, since it uses as much as digits as its factorization.

6660651133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 6660651133 is about 81612.8123090976. The cubic root of 6660651133 is about 1881.5058040206.

The spelling of 6660651133 in words is "six billion, six hundred sixty million, six hundred fifty-one thousand, one hundred thirty-three".