71156919908207 has 12 divisors (see below), whose sum is σ = 87643457174880. Its totient is φ = 57403901774016.

The previous prime is 71156919908197. The next prime is 71156919908213. The reversal of 71156919908207 is 70280991965117.

It is not a de Polignac number, because 71156919908207 - 2³² = 71152624940911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71156919907207) 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, 42711235607 + ... + 42711237272.

It is an arithmetic number, because the mean of its divisors is an integer number (7303621431240).

Almost surely, 2^{71156919908207} is an apocalyptic number.

71156919908207 is a deficient number, since it is larger than the sum of its proper divisors (16486537266673).

71156919908207 is a wasteful number, since it uses less digits than its factorization.

71156919908207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85422472910 (or 85422472903 counting only the distinct ones).

The product of its (nonzero) digits is 17146080, while the sum is 65.

The spelling of 71156919908207 in words is "seventy-one trillion, one hundred fifty-six billion, nine hundred nineteen million, nine hundred eight thousand, two hundred seven".