7215168680 has 128 divisors (see below), whose sum is σ = 17740944000. Its totient is φ = 2630476800.

The previous prime is 7215168647. The next prime is 7215168689. The reversal of 7215168680 is 868615127.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7215168689) 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 31 ways as a sum of consecutive naturals, for example, 10292330 + ... + 10293030.

It is an arithmetic number, because the mean of its divisors is an integer number (138601125).

Almost surely, 2^7215168680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7215168680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8870472000).

7215168680 is an abundant number, since it is smaller than the sum of its proper divisors (10525775320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7215168680 is a wasteful number, since it uses less digits than its factorization.

7215168680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 7215168680 is about 84942.1490192001. The cubic root of 7215168680 is about 1932.3338550347. Note that the first 3 decimals are identical.

The spelling of 7215168680 in words is "seven billion, two hundred fifteen million, one hundred sixty-eight thousand, six hundred eighty".