7216851667 has 8 divisors (see below), whose sum is σ = 7240631040. Its totient is φ = 7193091840.

The previous prime is 7216851659. The next prime is 7216851671. The reversal of 7216851667 is 7661586127.

It is a happy number.

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 7216851667 - 2³ = 7216851659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7216851667.

It is not an unprimeable number, because it can be changed into a prime (7216851617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1194009 + ... + 1200037.

It is an arithmetic number, because the mean of its divisors is an integer number (905078880).

Almost surely, 2^7216851667 is an apocalyptic number.

7216851667 is a deficient number, since it is larger than the sum of its proper divisors (23779373).

7216851667 is a wasteful number, since it uses less digits than its factorization.

7216851667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9773.

The product of its digits is 846720, while the sum is 49.

The square root of 7216851667 is about 84952.0551075723. The cubic root of 7216851667 is about 1932.4840866776.

The spelling of 7216851667 in words is "seven billion, two hundred sixteen million, eight hundred fifty-one thousand, six hundred sixty-seven".