8161470445138 has 8 divisors (see below), whose sum is σ = 12242245144140. Its totient is φ = 4080722063760.

The previous prime is 8161470445129. The next prime is 8161470445151. The reversal of 8161470445138 is 8315440741618.

It can be written as a sum of positive squares in 2 ways, for example, as 7922440390489 + 239030054649 = 2814683^2 + 488907^2 .

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

It is a super-2 number, since 2×8161470445138² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5784933 + ... + 7056088.

Almost surely, 2^{8161470445138} is an apocalyptic number.

8161470445138 is a deficient number, since it is larger than the sum of its proper divisors (4080774699002).

8161470445138 is a wasteful number, since it uses less digits than its factorization.

8161470445138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13158812.

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 8161470445138 in words is "eight trillion, one hundred sixty-one billion, four hundred seventy million, four hundred forty-five thousand, one hundred thirty-eight".