7156221368 has 8 divisors (see below), whose sum is σ = 13417915080. Its totient is φ = 3578110680.

The previous prime is 7156221353. The next prime is 7156221419. The reversal of 7156221368 is 8631226517.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 447263828 + ... + 447263843.

It is an arithmetic number, because the mean of its divisors is an integer number (1677239385).

Almost surely, 2^7156221368 is an apocalyptic number.

It is an amenable number.

7156221368 is a deficient number, since it is larger than the sum of its proper divisors (6261693712).

7156221368 is a wasteful number, since it uses less digits than its factorization.

7156221368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 894527677 (or 894527673 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 7156221368 is about 84594.4523476569. The cubic root of 7156221368 is about 1927.0571244953.

The spelling of 7156221368 in words is "seven billion, one hundred fifty-six million, two hundred twenty-one thousand, three hundred sixty-eight".