2660943973 has 2 divisors, whose sum is σ = 2660943974. Its totient is φ = 2660943972.

The previous prime is 2660943949. The next prime is 2660943979. The reversal of 2660943973 is 3793490662.

2660943973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1896863809 + 764080164 = 43553^2 + 27642^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2660943973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2660943979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330471986 + 1330471987.

It is an arithmetic number, because the mean of its divisors is an integer number (1330471987).

Almost surely, 2^2660943973 is an apocalyptic number.

It is an amenable number.

2660943973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660943973 is an equidigital number, since it uses as much as digits as its factorization.

2660943973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The square root of 2660943973 is about 51584.3384468581. The cubic root of 2660943973 is about 1385.7298647156.

The spelling of 2660943973 in words is "two billion, six hundred sixty million, nine hundred forty-three thousand, nine hundred seventy-three".