71311423568 has 160 divisors (see below), whose sum is σ = 176088467712. Its totient is φ = 27398891520.

The previous prime is 71311423567. The next prime is 71311423583. The reversal of 71311423568 is 86532411317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71311423567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10878980 + ... + 10885532.

Almost surely, 2^71311423568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71311423568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88044233856).

71311423568 is an abundant number, since it is smaller than the sum of its proper divisors (104777044144).

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

71311423568 is a wasteful number, since it uses less digits than its factorization.

71311423568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6674 (or 6646 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The spelling of 71311423568 in words is "seventy-one billion, three hundred eleven million, four hundred twenty-three thousand, five hundred sixty-eight".