71550325280 has 144 divisors (see below), whose sum is σ = 199126408320. Its totient is φ = 24220804608.

The previous prime is 71550325219. The next prime is 71550325289. The reversal of 71550325280 is 8252305517.

It is not an unprimeable number, because it can be changed into a prime (71550325289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 561599 + ... + 677121.

It is an arithmetic number, because the mean of its divisors is an integer number (1382822280).

Almost surely, 2^71550325280 is an apocalyptic number.

71550325280 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71550325280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99563204160).

71550325280 is an abundant number, since it is smaller than the sum of its proper divisors (127576083040).

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

71550325280 is a wasteful number, since it uses less digits than its factorization.

71550325280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115631 (or 115616 counting only the distinct ones).

The product of its (nonzero) digits is 84000, while the sum is 38.

The spelling of 71550325280 in words is "seventy-one billion, five hundred fifty million, three hundred twenty-five thousand, two hundred eighty".