7216224520565 has 4 divisors (see below), whose sum is σ = 8659469424684. Its totient is φ = 5772979616448.

The previous prime is 7216224520451. The next prime is 7216224520601. The reversal of 7216224520565 is 5650254226127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1532658856036 + 5683565664529 = 1238006^2 + 2384023^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7216224520565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721622452052 + ... + 721622452061.

It is an arithmetic number, because the mean of its divisors is an integer number (2164867356171).

Almost surely, 2^{7216224520565} is an apocalyptic number.

It is an amenable number.

7216224520565 is a deficient number, since it is larger than the sum of its proper divisors (1443244904119).

7216224520565 is a wasteful number, since it uses less digits than its factorization.

7216224520565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443244904118.

The product of its (nonzero) digits is 2016000, while the sum is 47.

The spelling of 7216224520565 in words is "seven trillion, two hundred sixteen billion, two hundred twenty-four million, five hundred twenty thousand, five hundred sixty-five".