65171245937472 has 448 divisors, whose sum is σ = 202745661381120. Its totient is φ = 20485940428800.

The previous prime is 65171245937461. The next prime is 65171245937491. The reversal of 65171245937472 is 27473954217156.

It is a happy number.

65171245937472 is a `hidden beast` number, since 6 + 5 + 1 + 7 + 124 + 5 + 9 + 37 + 472 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13406960322 + ... + 13406965182.

Almost surely, 2^{65171245937472} 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 65171245937472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101372830690560).

65171245937472 is an abundant number, since it is smaller than the sum of its proper divisors (137574415443648).

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

65171245937472 is a wasteful number, since it uses less digits than its factorization.

65171245937472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599 (or 9583 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 63.

The spelling of 65171245937472 in words is "sixty-five trillion, one hundred seventy-one billion, two hundred forty-five million, nine hundred thirty-seven thousand, four hundred seventy-two".