7221306556745 has 8 divisors (see below), whose sum is σ = 8666296934784. Its totient is φ = 5776559200944.

The previous prime is 7221306556741. The next prime is 7221306556837. The reversal of 7221306556745 is 5476556031227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7221306556745 - 2² = 7221306556741 is a prime.

It is a super-3 number, since 3×7221306556745³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221306556741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60690179 + ... + 60809048.

It is an arithmetic number, because the mean of its divisors is an integer number (1083287116848).

Almost surely, 2^{7221306556745} is an apocalyptic number.

It is an amenable number.

7221306556745 is a deficient number, since it is larger than the sum of its proper divisors (1444990378039).

7221306556745 is a wasteful number, since it uses less digits than its factorization.

7221306556745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121511119.

The product of its (nonzero) digits is 10584000, while the sum is 53.

The spelling of 7221306556745 in words is "seven trillion, two hundred twenty-one billion, three hundred six million, five hundred fifty-six thousand, seven hundred forty-five".