71108663868 has 216 divisors, whose sum is σ = 205994028240. Its totient is φ = 20641420800.

The previous prime is 71108663803. The next prime is 71108663881. The reversal of 71108663868 is 86836680117.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16546296 + ... + 16550592.

Almost surely, 2^71108663868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71108663868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102997014120).

71108663868 is an abundant number, since it is smaller than the sum of its proper divisors (134885364372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71108663868 is a wasteful number, since it uses less digits than its factorization.

71108663868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4489 (or 4473 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 71108663868 in words is "seventy-one billion, one hundred eight million, six hundred sixty-three thousand, eight hundred sixty-eight".