971207845160 has 128 divisors (see below), whose sum is σ = 2603172453120. Its totient is φ = 319150098432.

The previous prime is 971207845147. The next prime is 971207845169. The reversal of 971207845160 is 61548702179.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 971207845099 and 971207845108.

It is not an unprimeable number, because it can be changed into a prime (971207845169) 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, 5477 + ... + 1393716.

It is an arithmetic number, because the mean of its divisors is an integer number (20337284790).

Almost surely, 2^971207845160 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 971207845160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301586226560).

971207845160 is an abundant number, since it is smaller than the sum of its proper divisors (1631964607960).

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

971207845160 is a wasteful number, since it uses less digits than its factorization.

971207845160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399315 (or 1399311 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 971207845160 in words is "nine hundred seventy-one billion, two hundred seven million, eight hundred forty-five thousand, one hundred sixty".