7821367166 has 8 divisors (see below), whose sum is σ = 12242139984. Its totient is φ = 3740653840.

The previous prime is 7821367163. The next prime is 7821367181. The reversal of 7821367166 is 6617631287.

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

It is a super-2 number, since 2×7821367166² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7821367166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7821367163) 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, 85014815 + ... + 85014906.

It is an arithmetic number, because the mean of its divisors is an integer number (1530267498).

Almost surely, 2^7821367166 is an apocalyptic number.

7821367166 is a deficient number, since it is larger than the sum of its proper divisors (4420772818).

7821367166 is a wasteful number, since it uses less digits than its factorization.

7821367166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170029746.

The product of its digits is 508032, while the sum is 47.

The square root of 7821367166 is about 88438.4936891171. The cubic root of 7821367166 is about 1985.0017377165.

The spelling of 7821367166 in words is "seven billion, eight hundred twenty-one million, three hundred sixty-seven thousand, one hundred sixty-six".