8081136594693 has 24 divisors (see below), whose sum is σ = 12106921628256. Its totient is φ = 5386603453200.

The previous prime is 8081136594691. The next prime is 8081136594757. The reversal of 8081136594693 is 3964956311808.

8081136594693 is a `hidden beast` number, since 8 + 0 + 8 + 1 + 1 + 36 + 594 + 6 + 9 + 3 = 666.

It is not a de Polignac number, because 8081136594693 - 2¹ = 8081136594691 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8081136594693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081136594691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 933738 + ... + 4127243.

It is an arithmetic number, because the mean of its divisors is an integer number (504455067844).

Almost surely, 2^{8081136594693} is an apocalyptic number.

It is an amenable number.

8081136594693 is a deficient number, since it is larger than the sum of its proper divisors (4025785033563).

8081136594693 is an equidigital number, since it uses as much as digits as its factorization.

8081136594693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5067567 (or 5067555 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

Adding to 8081136594693 its sum of digits (63), we get a square (8081136594756 = 2842734²).

The spelling of 8081136594693 in words is "eight trillion, eighty-one billion, one hundred thirty-six million, five hundred ninety-four thousand, six hundred ninety-three".