71101206205 has 8 divisors (see below), whose sum is σ = 85383238104. Its totient is φ = 56839771200.

The previous prime is 71101206203. The next prime is 71101206217. The reversal of 71101206205 is 50260210117.

It can be written as a sum of positive squares in 4 ways, for example, as 2078356921 + 69022849284 = 45589^2 + 262722^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71101206205 - 2¹ = 71101206203 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71101206205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71101206203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5141626 + ... + 5155435.

It is an arithmetic number, because the mean of its divisors is an integer number (10672904763).

Almost surely, 2^71101206205 is an apocalyptic number.

It is an amenable number.

71101206205 is a deficient number, since it is larger than the sum of its proper divisors (14282031899).

71101206205 is a wasteful number, since it uses less digits than its factorization.

71101206205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10298447.

The product of its (nonzero) digits is 840, while the sum is 25.

The spelling of 71101206205 in words is "seventy-one billion, one hundred one million, two hundred six thousand, two hundred five".