2663976961 has 2 divisors, whose sum is σ = 2663976962. Its totient is φ = 2663976960.

The previous prime is 2663976941. The next prime is 2663976983. The reversal of 2663976961 is 1696793662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1519440400 + 1144536561 = 38980^2 + 33831^2 .

It is a cyclic number.

It is not a de Polignac number, because 2663976961 - 2¹¹ = 2663974913 is a prime.

It is not a weakly prime, because it can be changed into another prime (2663976941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1331988480 + 1331988481.

It is an arithmetic number, because the mean of its divisors is an integer number (1331988481).

Almost surely, 2^2663976961 is an apocalyptic number.

It is an amenable number.

2663976961 is a deficient number, since it is larger than the sum of its proper divisors (1).

2663976961 is an equidigital number, since it uses as much as digits as its factorization.

2663976961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 55.

The square root of 2663976961 is about 51613.7284159941. The cubic root of 2663976961 is about 1386.2561574220.

The spelling of 2663976961 in words is "two billion, six hundred sixty-three million, nine hundred seventy-six thousand, nine hundred sixty-one".