71656171203 has 4 divisors (see below), whose sum is σ = 95541561608. Its totient is φ = 47770780800.

The previous prime is 71656171187. The next prime is 71656171207. The reversal of 71656171203 is 30217165617.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 71656171203 - 2⁴ = 71656171187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71656171207) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11942695198 + ... + 11942695203.

It is an arithmetic number, because the mean of its divisors is an integer number (23885390402).

Almost surely, 2^71656171203 is an apocalyptic number.

71656171203 is a deficient number, since it is larger than the sum of its proper divisors (23885390405).

71656171203 is a wasteful number, since it uses less digits than its factorization.

71656171203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23885390404.

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 71656171203 in words is "seventy-one billion, six hundred fifty-six million, one hundred seventy-one thousand, two hundred three".