975667666249 has 2 divisors, whose sum is σ = 975667666250. Its totient is φ = 975667666248.

The previous prime is 975667666133. The next prime is 975667666277. The reversal of 975667666249 is 942666766579.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 971097906249 + 4569760000 = 985443^2 + 67600^2 .

It is a cyclic number.

It is not a de Polignac number, because 975667666249 - 2⁹ = 975667665737 is a prime.

It is not a weakly prime, because it can be changed into another prime (975667663249) 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, 487833833124 + 487833833125.

It is an arithmetic number, because the mean of its divisors is an integer number (487833833125).

Almost surely, 2^975667666249 is an apocalyptic number.

It is an amenable number.

975667666249 is a deficient number, since it is larger than the sum of its proper divisors (1).

975667666249 is an equidigital number, since it uses as much as digits as its factorization.

975667666249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1234517760, while the sum is 73.

The spelling of 975667666249 in words is "nine hundred seventy-five billion, six hundred sixty-seven million, six hundred sixty-six thousand, two hundred forty-nine".