670265095261 has 2 divisors, whose sum is σ = 670265095262. Its totient is φ = 670265095260.

The previous prime is 670265095259. The next prime is 670265095267. The reversal of 670265095261 is 162590562076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669508515225 + 756580036 = 818235^2 + 27506^2 .

It is a cyclic number.

It is not a de Polignac number, because 670265095261 - 2¹ = 670265095259 is a prime.

Together with 670265095259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670265095267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335132547630 + 335132547631.

It is an arithmetic number, because the mean of its divisors is an integer number (335132547631).

Almost surely, 2^670265095261 is an apocalyptic number.

It is an amenable number.

670265095261 is a deficient number, since it is larger than the sum of its proper divisors (1).

670265095261 is an equidigital number, since it uses as much as digits as its factorization.

670265095261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 670265095261 in words is "six hundred seventy billion, two hundred sixty-five million, ninety-five thousand, two hundred sixty-one".