71532844488 has 384 divisors, whose sum is σ = 237219840000. Its totient is φ = 19020718080.

The previous prime is 71532844423. The next prime is 71532844531. The reversal of 71532844488 is 88444823517.

71532844488 is a `hidden beast` number, since 7 + 153 + 2 + 8 + 4 + 4 + 488 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 159315688 + ... + 159316136.

It is an arithmetic number, because the mean of its divisors is an integer number (617760000).

Almost surely, 2^71532844488 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 71532844488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118609920000).

71532844488 is an abundant number, since it is smaller than the sum of its proper divisors (165686995512).

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

71532844488 is a wasteful number, since it uses less digits than its factorization.

71532844488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 738 counting only the distinct ones).

The product of its digits is 6881280, while the sum is 54.

The spelling of 71532844488 in words is "seventy-one billion, five hundred thirty-two million, eight hundred forty-four thousand, four hundred eighty-eight".