71552142881 has 8 divisors (see below), whose sum is σ = 72082507200. Its totient is φ = 71022723408.

The previous prime is 71552142839. The next prime is 71552142887. The reversal of 71552142881 is 18824125517.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71552142881 is a prime.

It is a super-2 number, since 2×71552142881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71552142887) 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, 83831 + ... + 387468.

It is an arithmetic number, because the mean of its divisors is an integer number (9010313400).

Almost surely, 2^71552142881 is an apocalyptic number.

It is an amenable number.

71552142881 is a deficient number, since it is larger than the sum of its proper divisors (530364319).

71552142881 is a wasteful number, since it uses less digits than its factorization.

71552142881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472423.

The product of its digits is 179200, while the sum is 44.

The spelling of 71552142881 in words is "seventy-one billion, five hundred fifty-two million, one hundred forty-two thousand, eight hundred eighty-one".