71737507712 has 64 divisors (see below), whose sum is σ = 158872882560. Its totient is φ = 32041543680.

The previous prime is 71737507711. The next prime is 71737507739. The reversal of 71737507712 is 21770573717.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71737507711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643763 + ... + 746930.

It is an arithmetic number, because the mean of its divisors is an integer number (2482388790).

Almost surely, 2^71737507712 is an apocalyptic number.

It is an amenable number.

71737507712 is an abundant number, since it is smaller than the sum of its proper divisors (87135374848).

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

71737507712 is a wasteful number, since it uses less digits than its factorization.

71737507712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390751 (or 1390739 counting only the distinct ones).

The product of its (nonzero) digits is 504210, while the sum is 47.

The spelling of 71737507712 in words is "seventy-one billion, seven hundred thirty-seven million, five hundred seven thousand, seven hundred twelve".