71564788480 has 72 divisors (see below), whose sum is σ = 181503618912. Its totient is φ = 26942029824.

The previous prime is 71564788439. The next prime is 71564788487. The reversal of 71564788480 is 8488746517.

It is not an unprimeable number, because it can be changed into a prime (71564788487) 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, 1622652 + ... + 1666171.

It is an arithmetic number, because the mean of its divisors is an integer number (2520883596).

Almost surely, 2^71564788480 is an apocalyptic number.

It is an amenable number.

71564788480 is an abundant number, since it is smaller than the sum of its proper divisors (109938830432).

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

71564788480 is a wasteful number, since it uses less digits than its factorization.

71564788480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288861 (or 3288847 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 58.

The spelling of 71564788480 in words is "seventy-one billion, five hundred sixty-four million, seven hundred eighty-eight thousand, four hundred eighty".