7211346705 has 128 divisors (see below), whose sum is σ = 14017328640. Its totient is φ = 3503185920.

The previous prime is 7211346643. The next prime is 7211346721. The reversal of 7211346705 is 5076431127.

It is a happy number.

It is not a de Polignac number, because 7211346705 - 2¹⁹ = 7210822417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7211346705.

It is an unprimeable number.

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 in 127 ways as a sum of consecutive naturals, for example, 16278214 + ... + 16278656.

It is an arithmetic number, because the mean of its divisors is an integer number (109510380).

Almost surely, 2^7211346705 is an apocalyptic number.

It is an amenable number.

7211346705 is a deficient number, since it is larger than the sum of its proper divisors (6805981935).

7211346705 is a wasteful number, since it uses less digits than its factorization.

7211346705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 7211346705 is about 84919.6485214111. The cubic root of 7211346705 is about 1931.9926000835.

The spelling of 7211346705 in words is "seven billion, two hundred eleven million, three hundred forty-six thousand, seven hundred five".