7211241656 has 8 divisors (see below), whose sum is σ = 13521078120. Its totient is φ = 3605620824.

The previous prime is 7211241649. The next prime is 7211241671. The reversal of 7211241656 is 6561421127.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 450702596 + ... + 450702611.

It is an arithmetic number, because the mean of its divisors is an integer number (1690134765).

Almost surely, 2^7211241656 is an apocalyptic number.

It is an amenable number.

7211241656 is a deficient number, since it is larger than the sum of its proper divisors (6309836464).

7211241656 is a wasteful number, since it uses less digits than its factorization.

7211241656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901405213 (or 901405209 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 7211241656 is about 84919.0299991704. The cubic root of 7211241656 is about 1931.9832188087.

The spelling of 7211241656 in words is "seven billion, two hundred eleven million, two hundred forty-one thousand, six hundred fifty-six".