7166213978338 has 8 divisors (see below), whose sum is σ = 11039843155932. Its totient is φ = 3486266259696.

The previous prime is 7166213978327. The next prime is 7166213978353. The reversal of 7166213978338 is 8338793126617.

It can be written as a sum of positive squares in 2 ways, for example, as 7161923335329 + 4290643009 = 2676177^2 + 65503^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 7166213978338.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48420364645 + ... + 48420364792.

Almost surely, 2^{7166213978338} is an apocalyptic number.

7166213978338 is a deficient number, since it is larger than the sum of its proper divisors (3873629177594).

7166213978338 is a wasteful number, since it uses less digits than its factorization.

7166213978338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96840729476.

The product of its digits is 54867456, while the sum is 64.

The spelling of 7166213978338 in words is "seven trillion, one hundred sixty-six billion, two hundred thirteen million, nine hundred seventy-eight thousand, three hundred thirty-eight".