71738638911 has 12 divisors (see below), whose sum is σ = 108127803888. Its totient is φ = 45746378304.

The previous prime is 71738638897. The next prime is 71738638967. The reversal of 71738638911 is 11983683717.

71738638911 is a `hidden beast` number, since 7 + 173 + 86 + 389 + 11 = 666.

It is not a de Polignac number, because 71738638911 - 2⁹ = 71738638399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71738638981) 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, 173281530 + ... + 173281943.

It is an arithmetic number, because the mean of its divisors is an integer number (9010650324).

Almost surely, 2^71738638911 is an apocalyptic number.

71738638911 is a deficient number, since it is larger than the sum of its proper divisors (36389164977).

71738638911 is a wasteful number, since it uses less digits than its factorization.

71738638911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346563502 (or 346563499 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

It can be divided in two parts, 71738 and 638911, that added together give a square (710649 = 843²).

The spelling of 71738638911 in words is "seventy-one billion, seven hundred thirty-eight million, six hundred thirty-eight thousand, nine hundred eleven".