705649946251 has 2 divisors, whose sum is σ = 705649946252. Its totient is φ = 705649946250.

The previous prime is 705649946249. The next prime is 705649946263. The reversal of 705649946251 is 152649946507.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 705649946251 - 2¹ = 705649946249 is a prime.

Together with 705649946249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (705649946201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352824973125 + 352824973126.

It is an arithmetic number, because the mean of its divisors is an integer number (352824973126).

Almost surely, 2^705649946251 is an apocalyptic number.

705649946251 is a deficient number, since it is larger than the sum of its proper divisors (1).

705649946251 is an equidigital number, since it uses as much as digits as its factorization.

705649946251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16329600, while the sum is 58.

The spelling of 705649946251 in words is "seven hundred five billion, six hundred forty-nine million, nine hundred forty-six thousand, two hundred fifty-one".