71265863172 has 96 divisors (see below), whose sum is σ = 196435943424. Its totient is φ = 19678406400.

The previous prime is 71265863129. The next prime is 71265863177. The reversal of 71265863172 is 27136856217.

It is not an unprimeable number, because it can be changed into a prime (71265863177) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1963663 + ... + 1999625.

It is an arithmetic number, because the mean of its divisors is an integer number (2046207744).

Almost surely, 2^71265863172 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 71265863172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98217971712).

71265863172 is an abundant number, since it is smaller than the sum of its proper divisors (125170080252).

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

71265863172 is a wasteful number, since it uses less digits than its factorization.

71265863172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36769 (or 36767 counting only the distinct ones).

The product of its digits is 846720, while the sum is 48.

The spelling of 71265863172 in words is "seventy-one billion, two hundred sixty-five million, eight hundred sixty-three thousand, one hundred seventy-two".