7220716516 has 12 divisors (see below), whose sum is σ = 13608273532. Its totient is φ = 3332638368.

The previous prime is 7220716513. The next prime is 7220716519. The reversal of 7220716516 is 6156170227.

It is an interprime number because it is at equal distance from previous prime (7220716513) and next prime (7220716519).

It can be written as a sum of positive squares in 2 ways, for example, as 1184048100 + 6036668416 = 34410^2 + 77696^2 .

It is not an unprimeable number, because it can be changed into a prime (7220716513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69429915 + ... + 69430018.

Almost surely, 2^7220716516 is an apocalyptic number.

It is an amenable number.

7220716516 is a deficient number, since it is larger than the sum of its proper divisors (6387557016).

7220716516 is a wasteful number, since it uses less digits than its factorization.

7220716516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138859950 (or 138859948 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 7220716516 is about 84974.7992995570. The cubic root of 7220716516 is about 1932.8289936019.

The spelling of 7220716516 in words is "seven billion, two hundred twenty million, seven hundred sixteen thousand, five hundred sixteen".