71283437568 has 936 divisors, whose sum is σ = 264145989120. Its totient is φ = 18393661440.

The previous prime is 71283437521. The next prime is 71283437573. The reversal of 71283437568 is 86573438217.

It is a happy number.

71283437568 is a `hidden beast` number, since 7 + 12 + 8 + 34 + 37 + 568 = 666.

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, 1063931871 + ... + 1063931937.

Almost surely, 2^71283437568 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 71283437568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132072994560).

71283437568 is an abundant number, since it is smaller than the sum of its proper divisors (192862551552).

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

71283437568 is a wasteful number, since it uses less digits than its factorization.

71283437568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 129 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The spelling of 71283437568 in words is "seventy-one billion, two hundred eighty-three million, four hundred thirty-seven thousand, five hundred sixty-eight".