71170316721081 has 12 divisors (see below), whose sum is σ = 105308923929300. Its totient is φ = 46289636891520.

The previous prime is 71170316721067. The next prime is 71170316721089. The reversal of 71170316721081 is 18012761307117.

71170316721081 is a `hidden beast` number, since 7 + 117 + 0 + 316 + 7 + 210 + 8 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21938132321856 + 49232184399225 = 4683816^2 + 7016565^2 .

It is not a de Polignac number, because 71170316721081 - 2¹³ = 71170316712889 is a prime.

It is a super-2 number, since 2×71170316721081² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71170316721089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96436743156 + ... + 96436743893.

It is an arithmetic number, because the mean of its divisors is an integer number (8775743660775).

Almost surely, 2^{71170316721081} is an apocalyptic number.

It is an amenable number.

71170316721081 is a deficient number, since it is larger than the sum of its proper divisors (34138607208219).

71170316721081 is a wasteful number, since it uses less digits than its factorization.

71170316721081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192873487096 (or 192873487093 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 45.

The spelling of 71170316721081 in words is "seventy-one trillion, one hundred seventy billion, three hundred sixteen million, seven hundred twenty-one thousand, eighty-one".