71325171372 has 576 divisors, whose sum is σ = 237433835520. Its totient is φ = 16150192128.

The previous prime is 71325171341. The next prime is 71325171373. The reversal of 71325171372 is 27317152317.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 71325171372.

It is not an unprimeable number, because it can be changed into a prime (71325171373) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 194346333 + ... + 194346699.

It is an arithmetic number, because the mean of its divisors is an integer number (412211520).

Almost surely, 2^71325171372 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 71325171372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118716917760).

71325171372 is an abundant number, since it is smaller than the sum of its proper divisors (166108664148).

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

71325171372 is a wasteful number, since it uses less digits than its factorization.

71325171372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478 (or 457 counting only the distinct ones).

The product of its digits is 61740, while the sum is 39.

The spelling of 71325171372 in words is "seventy-one billion, three hundred twenty-five million, one hundred seventy-one thousand, three hundred seventy-two".