71172571008 has 384 divisors, whose sum is σ = 250411795200. Its totient is φ = 17396858880.

The previous prime is 71172570949. The next prime is 71172571009. The reversal of 71172571008 is 80017527117.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71172571009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8540988 + ... + 8549316.

It is an arithmetic number, because the mean of its divisors is an integer number (652114050).

Almost surely, 2^71172571008 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 71172571008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125205897600).

71172571008 is an abundant number, since it is smaller than the sum of its proper divisors (179239224192).

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

71172571008 is a wasteful number, since it uses less digits than its factorization.

71172571008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398 (or 8369 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 39.

The spelling of 71172571008 in words is "seventy-one billion, one hundred seventy-two million, five hundred seventy-one thousand, eight".