2664900880657 has 2 divisors, whose sum is σ = 2664900880658. Its totient is φ = 2664900880656.

The previous prime is 2664900880651. The next prime is 2664900880717. The reversal of 2664900880657 is 7560880094662.

2664900880657 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2042681242176 + 622219638481 = 1429224^2 + 788809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2664900880657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2664900880595 and 2664900880604.

It is not a weakly prime, because it can be changed into another prime (2664900880651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332450440328 + 1332450440329.

It is an arithmetic number, because the mean of its divisors is an integer number (1332450440329).

Almost surely, 2^{2664900880657} is an apocalyptic number.

It is an amenable number.

2664900880657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2664900880657 is an equidigital number, since it uses as much as digits as its factorization.

2664900880657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 2664900880657 in words is "two trillion, six hundred sixty-four billion, nine hundred million, eight hundred eighty thousand, six hundred fifty-seven".