670761999235949 has 2 divisors, whose sum is σ = 670761999235950. Its totient is φ = 670761999235948.

The previous prime is 670761999235931. The next prime is 670761999235957. The reversal of 670761999235949 is 949532999167076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 660484089013225 + 10277910222724 = 25699885^2 + 3205918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670761999235949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670761999238949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335380999617974 + 335380999617975.

It is an arithmetic number, because the mean of its divisors is an integer number (335380999617975).

Almost surely, 2^{670761999235949} is an apocalyptic number.

It is an amenable number.

670761999235949 is a deficient number, since it is larger than the sum of its proper divisors (1).

670761999235949 is an equidigital number, since it uses as much as digits as its factorization.

670761999235949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12499492320, while the sum is 86.

The spelling of 670761999235949 in words is "six hundred seventy trillion, seven hundred sixty-one billion, nine hundred ninety-nine million, two hundred thirty-five thousand, nine hundred forty-nine".