971347722240 has 576 divisors, whose sum is σ = 3582391712256. Its totient is φ = 220150628352.

The previous prime is 971347722193. The next prime is 971347722271. The reversal of 971347722240 is 42227743179.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 971347722240.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2243297064 + ... + 2243297496.

It is an arithmetic number, because the mean of its divisors is an integer number (6219430056).

Almost surely, 2^971347722240 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 971347722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1791195856128).

971347722240 is an abundant number, since it is smaller than the sum of its proper divisors (2611043990016).

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

971347722240 is an equidigital number, since it uses as much as digits as its factorization.

971347722240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 48.

The spelling of 971347722240 in words is "nine hundred seventy-one billion, three hundred forty-seven million, seven hundred twenty-two thousand, two hundred forty".