71559228643 has 8 divisors (see below), whose sum is σ = 81785289312. Its totient is φ = 61333996416.

The previous prime is 71559228641. The next prime is 71559228721. The reversal of 71559228643 is 34682295517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71559228643 - 2¹ = 71559228641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71559228641) 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, 9430 + ... + 378427.

It is an arithmetic number, because the mean of its divisors is an integer number (10223161164).

Almost surely, 2^71559228643 is an apocalyptic number.

71559228643 is a deficient number, since it is larger than the sum of its proper divisors (10226060669).

71559228643 is a wasteful number, since it uses less digits than its factorization.

71559228643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414221.

The product of its digits is 3628800, while the sum is 52.

The spelling of 71559228643 in words is "seventy-one billion, five hundred fifty-nine million, two hundred twenty-eight thousand, six hundred forty-three".