71575526528 has 64 divisors (see below), whose sum is σ = 155966364000. Its totient is φ = 32448245760.

The previous prime is 71575526527. The next prime is 71575526537. The reversal of 71575526528 is 82562557517.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 71575526528.

It is not an unprimeable number, because it can be changed into a prime (71575526527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466568 + ... + 600696.

Almost surely, 2^71575526528 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 71575526528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77983182000).

71575526528 is an abundant number, since it is smaller than the sum of its proper divisors (84390837472).

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

71575526528 is a wasteful number, since it uses less digits than its factorization.

71575526528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134533 (or 134521 counting only the distinct ones).

The product of its digits is 5880000, while the sum is 53.

The spelling of 71575526528 in words is "seventy-one billion, five hundred seventy-five million, five hundred twenty-six thousand, five hundred twenty-eight".