8973856194905 has 12 divisors (see below), whose sum is σ = 12526770688740. Its totient is φ = 6153501390624.

The previous prime is 8973856194887. The next prime is 8973856194959. The reversal of 8973856194905 is 5094916583798.

It can be written as a sum of positive squares in 2 ways, for example, as 5176389428224 + 3797466766681 = 2275168^2 + 1948709^2 .

It is a de Polignac number, because none of the positive numbers 2^k-8973856194905 is a prime.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 18313991990 + ... + 18313992479.

It is an arithmetic number, because the mean of its divisors is an integer number (1043897557395).

Almost surely, 2^{8973856194905} is an apocalyptic number.

It is an amenable number.

8973856194905 is a deficient number, since it is larger than the sum of its proper divisors (3552914493835).

8973856194905 is a wasteful number, since it uses less digits than its factorization.

8973856194905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36627984488 (or 36627984481 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 74.

The spelling of 8973856194905 in words is "eight trillion, nine hundred seventy-three billion, eight hundred fifty-six million, one hundred ninety-four thousand, nine hundred five".