8185981605535 has 32 divisors (see below), whose sum is σ = 10070799773760. Its totient is φ = 6384292992000.

The previous prime is 8185981605463. The next prime is 8185981605551. The reversal of 8185981605535 is 5355061895818.

It is not a de Polignac number, because 8185981605535 - 2⁹ = 8185981605023 is a prime.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413402635 + ... + 413422435.

It is an arithmetic number, because the mean of its divisors is an integer number (314712492930).

Almost surely, 2^{8185981605535} is an apocalyptic number.

8185981605535 is a deficient number, since it is larger than the sum of its proper divisors (1884818168225).

8185981605535 is a wasteful number, since it uses less digits than its factorization.

8185981605535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23419.

The product of its (nonzero) digits is 51840000, while the sum is 64.

The spelling of 8185981605535 in words is "eight trillion, one hundred eighty-five billion, nine hundred eighty-one million, six hundred five thousand, five hundred thirty-five".