71115101605 has 8 divisors (see below), whose sum is σ = 85477339512. Its totient is φ = 56799269568.

The previous prime is 71115101591. The next prime is 71115101671. The reversal of 71115101605 is 50610151117.

It can be written as a sum of positive squares in 4 ways, for example, as 1039482081 + 70075619524 = 32241^2 + 264718^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 71115101605 - 2²⁷ = 70980883877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11598094 + ... + 11604223.

It is an arithmetic number, because the mean of its divisors is an integer number (10684667439).

Almost surely, 2^71115101605 is an apocalyptic number.

It is an amenable number.

71115101605 is a deficient number, since it is larger than the sum of its proper divisors (14362237907).

71115101605 is a wasteful number, since it uses less digits than its factorization.

71115101605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23202935.

The product of its (nonzero) digits is 1050, while the sum is 28.

The spelling of 71115101605 in words is "seventy-one billion, one hundred fifteen million, one hundred one thousand, six hundred five".