7216573665 has 16 divisors (see below), whose sum is σ = 13196020608. Its totient is φ = 3299005056.

The previous prime is 7216573657. The next prime is 7216573739. The reversal of 7216573665 is 5663756127.

It is not a de Polignac number, because 7216573665 - 2³ = 7216573657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34364532 + ... + 34364741.

It is an arithmetic number, because the mean of its divisors is an integer number (824751288).

Almost surely, 2^7216573665 is an apocalyptic number.

It is an amenable number.

7216573665 is a deficient number, since it is larger than the sum of its proper divisors (5979446943).

7216573665 is a wasteful number, since it uses less digits than its factorization.

7216573665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68729288.

The product of its digits is 1587600, while the sum is 48.

The square root of 7216573665 is about 84950.4188630050. The cubic root of 7216573665 is about 1932.4592724712.

The spelling of 7216573665 in words is "seven billion, two hundred sixteen million, five hundred seventy-three thousand, six hundred sixty-five".