7220716515 has 16 divisors (see below), whose sum is σ = 12836829600. Its totient is φ = 3851048736.

The previous prime is 7220716513. The next prime is 7220716519. The reversal of 7220716515 is 5156170227.

7220716515 is a `hidden beast` number, since 72 + 2 + 0 + 71 + 6 + 515 = 666.

It is not a de Polignac number, because 7220716515 - 2¹ = 7220716513 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7220716515.

It is not an unprimeable number, because it can be changed into a prime (7220716513) 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 15 ways as a sum of consecutive naturals, for example, 26743260 + ... + 26743529.

It is an arithmetic number, because the mean of its divisors is an integer number (802301850).

Almost surely, 2^7220716515 is an apocalyptic number.

7220716515 is a deficient number, since it is larger than the sum of its proper divisors (5616113085).

7220716515 is a wasteful number, since it uses less digits than its factorization.

7220716515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53486803 (or 53486797 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 7220716515 is about 84974.7992936729. The cubic root of 7220716515 is about 1932.8289935127.

The spelling of 7220716515 in words is "seven billion, two hundred twenty million, seven hundred sixteen thousand, five hundred fifteen".