71713831061 has 4 divisors (see below), whose sum is σ = 72410081952. Its totient is φ = 71017580172.

The previous prime is 71713831051. The next prime is 71713831099. The reversal of 71713831061 is 16013831717.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71713831061 - 2¹⁴ = 71713814677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71713831001) 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, 348125291 + ... + 348125496.

It is an arithmetic number, because the mean of its divisors is an integer number (18102520488).

Almost surely, 2^71713831061 is an apocalyptic number.

It is an amenable number.

71713831061 is a deficient number, since it is larger than the sum of its proper divisors (696250891).

71713831061 is a wasteful number, since it uses less digits than its factorization.

71713831061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696250890.

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 71713831061 in words is "seventy-one billion, seven hundred thirteen million, eight hundred thirty-one thousand, sixty-one".