7216866771 has 8 divisors (see below), whose sum is σ = 9712419264. Its totient is φ = 4766279400.

The previous prime is 7216866739. The next prime is 7216866793. The reversal of 7216866771 is 1776686127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7216866771 - 2⁵ = 7216866739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7216866871) 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, 11240905 + ... + 11241546.

It is an arithmetic number, because the mean of its divisors is an integer number (1214052408).

Almost surely, 2^7216866771 is an apocalyptic number.

7216866771 is a deficient number, since it is larger than the sum of its proper divisors (2495552493).

7216866771 is a wasteful number, since it uses less digits than its factorization.

7216866771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22482561.

The product of its digits is 1185408, while the sum is 51.

The square root of 7216866771 is about 84952.1440047277. The cubic root of 7216866771 is about 1932.4854348287.

The spelling of 7216866771 in words is "seven billion, two hundred sixteen million, eight hundred sixty-six thousand, seven hundred seventy-one".