71519747712 has 256 divisors, whose sum is σ = 233212800000. Its totient is φ = 19358051328.

The previous prime is 71519747671. The next prime is 71519747737. The reversal of 71519747712 is 21774791517.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2488239 + ... + 2516817.

It is an arithmetic number, because the mean of its divisors is an integer number (910987500).

Almost surely, 2^71519747712 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 71519747712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116606400000).

71519747712 is an abundant number, since it is smaller than the sum of its proper divisors (161693052288).

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

71519747712 is a wasteful number, since it uses less digits than its factorization.

71519747712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28636 (or 28610 counting only the distinct ones).

The product of its digits is 864360, while the sum is 51.

The spelling of 71519747712 in words is "seventy-one billion, five hundred nineteen million, seven hundred forty-seven thousand, seven hundred twelve".