71439020744 has 32 divisors (see below), whose sum is σ = 164859280320. Its totient is φ = 28261590336.

The previous prime is 71439020713. The next prime is 71439020749. The reversal of 71439020744 is 44702093417.

It is not an unprimeable number, because it can be changed into a prime (71439020749) 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, 49064534 + ... + 49065989.

It is an arithmetic number, because the mean of its divisors is an integer number (5151852510).

Almost surely, 2^71439020744 is an apocalyptic number.

It is an amenable number.

71439020744 is an abundant number, since it is smaller than the sum of its proper divisors (93420259576).

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

71439020744 is a wasteful number, since it uses less digits than its factorization.

71439020744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98130549 (or 98130545 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 71439020744 in words is "seventy-one billion, four hundred thirty-nine million, twenty thousand, seven hundred forty-four".