71653527568 has 20 divisors (see below), whose sum is σ = 158661382720. Its totient is φ = 30708654624.

The previous prime is 71653527563. The next prime is 71653527637. The reversal of 71653527568 is 86572535617.

It is not an unprimeable number, because it can be changed into a prime (71653527563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319881708 + ... + 319881931.

It is an arithmetic number, because the mean of its divisors is an integer number (7933069136).

Almost surely, 2^71653527568 is an apocalyptic number.

It is an amenable number.

71653527568 is an abundant number, since it is smaller than the sum of its proper divisors (87007855152).

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

71653527568 is a wasteful number, since it uses less digits than its factorization.

71653527568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639763654 (or 639763648 counting only the distinct ones).

The product of its digits is 10584000, while the sum is 55.

The spelling of 71653527568 in words is "seventy-one billion, six hundred fifty-three million, five hundred twenty-seven thousand, five hundred sixty-eight".