8185981605536 has 96 divisors (see below), whose sum is σ = 18481111165440. Its totient is φ = 3496354557696.

The previous prime is 8185981605463. The next prime is 8185981605551. The reversal of 8185981605536 is 6355061895818.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155662895 + ... + 155715473.

It is an arithmetic number, because the mean of its divisors is an integer number (192511574640).

Almost surely, 2^{8185981605536} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8185981605536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9240555582720).

8185981605536 is an abundant number, since it is smaller than the sum of its proper divisors (10295129559904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8185981605536 is a wasteful number, since it uses less digits than its factorization.

8185981605536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54946 (or 54938 counting only the distinct ones).

The product of its (nonzero) digits is 62208000, while the sum is 65.

The spelling of 8185981605536 in words is "eight trillion, one hundred eighty-five billion, nine hundred eighty-one million, six hundred five thousand, five hundred thirty-six".