71311298784 has 96 divisors (see below), whose sum is σ = 204937205760. Its totient is φ = 21532492800.

The previous prime is 71311298767. The next prime is 71311298789. The reversal of 71311298784 is 48789211317.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71311298789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176577 + ... + 416895.

It is an arithmetic number, because the mean of its divisors is an integer number (2134762560).

Almost surely, 2^71311298784 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 71311298784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102468602880).

71311298784 is an abundant number, since it is smaller than the sum of its proper divisors (133625906976).

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

71311298784 is a wasteful number, since it uses less digits than its factorization.

71311298784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240624 (or 240616 counting only the distinct ones).

The product of its digits is 677376, while the sum is 51.

The spelling of 71311298784 in words is "seventy-one billion, three hundred eleven million, two hundred ninety-eight thousand, seven hundred eighty-four".