71711755523 has 4 divisors (see below), whose sum is σ = 73064807568. Its totient is φ = 70358703480.

The previous prime is 71711755519. The next prime is 71711755543. The reversal of 71711755523 is 32555711717.

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

It is a cyclic number.

It is not a de Polignac number, because 71711755523 - 2² = 71711755519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71711755543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676525943 + ... + 676526048.

It is an arithmetic number, because the mean of its divisors is an integer number (18266201892).

Almost surely, 2^71711755523 is an apocalyptic number.

71711755523 is a deficient number, since it is larger than the sum of its proper divisors (1353052045).

71711755523 is a wasteful number, since it uses less digits than its factorization.

71711755523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353052044.

The product of its digits is 257250, while the sum is 44.

The spelling of 71711755523 in words is "seventy-one billion, seven hundred eleven million, seven hundred fifty-five thousand, five hundred twenty-three".