8161038967945 has 8 divisors (see below), whose sum is σ = 10219040099136. Its totient is φ = 6244968949296.

The previous prime is 8161038967897. The next prime is 8161038968021. The reversal of 8161038967945 is 5497698301618.

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

It is a cyclic number.

It is not a de Polignac number, because 8161038967945 - 2³³ = 8152449033353 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 35482778007 + ... + 35482778236.

It is an arithmetic number, because the mean of its divisors is an integer number (1277380012392).

Almost surely, 2^{8161038967945} is an apocalyptic number.

It is an amenable number.

8161038967945 is a deficient number, since it is larger than the sum of its proper divisors (2058001131191).

8161038967945 is a wasteful number, since it uses less digits than its factorization.

8161038967945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70965556271.

The product of its (nonzero) digits is 78382080, while the sum is 67.

The spelling of 8161038967945 in words is "eight trillion, one hundred sixty-one billion, thirty-eight million, nine hundred sixty-seven thousand, nine hundred forty-five".