71145111716 has 48 divisors (see below), whose sum is σ = 150056645760. Its totient is φ = 28832474880.

The previous prime is 71145111643. The next prime is 71145111761. The reversal of 71145111716 is 61711154117.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164216 + ... + 411408.

It is an arithmetic number, because the mean of its divisors is an integer number (3126180120).

Almost surely, 2^71145111716 is an apocalyptic number.

71145111716 is a gapful number since it is divisible by the number (76) 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 71145111716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75028322880).

71145111716 is an abundant number, since it is smaller than the sum of its proper divisors (78911534044).

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

71145111716 is a wasteful number, since it uses less digits than its factorization.

71145111716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247764 (or 247762 counting only the distinct ones).

The product of its digits is 5880, while the sum is 35.

The spelling of 71145111716 in words is "seventy-one billion, one hundred forty-five million, one hundred eleven thousand, seven hundred sixteen".