8071081236 has 36 divisors (see below), whose sum is σ = 20599985952. Its totient is φ = 2664239184.

The previous prime is 8071081223. The next prime is 8071081237. The reversal of 8071081236 is 6321801708.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×8071081236² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8071081236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8071081237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1084626 + ... + 1092041.

It is an arithmetic number, because the mean of its divisors is an integer number (572221832).

Almost surely, 2^8071081236 is an apocalyptic number.

It is an amenable number.

8071081236 is an abundant number, since it is smaller than the sum of its proper divisors (12528904716).

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

8071081236 is a wasteful number, since it uses less digits than its factorization.

8071081236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176780 (or 2176775 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 8071081236 is about 89839.1965458285. The cubic root of 8071081236 is about 2005.9059788731.

The spelling of 8071081236 in words is "eight billion, seventy-one million, eighty-one thousand, two hundred thirty-six".