320471271780 has 192 divisors, whose sum is σ = 991589050368. Its totient is φ = 76684195840.

The previous prime is 320471271773. The next prime is 320471271787. The reversal of 320471271780 is 87172174023.

It is an interprime number because it is at equal distance from previous prime (320471271773) and next prime (320471271787).

It is not an unprimeable number, because it can be changed into a prime (320471271787) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85071457 + ... + 85075223.

It is an arithmetic number, because the mean of its divisors is an integer number (5164526304).

Almost surely, 2^320471271780 is an apocalyptic number.

320471271780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320471271780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (495794525184).

320471271780 is an abundant number, since it is smaller than the sum of its proper divisors (671117778588).

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

320471271780 is a wasteful number, since it uses less digits than its factorization.

320471271780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5426 (or 5424 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 42.

The spelling of 320471271780 in words is "three hundred twenty billion, four hundred seventy-one million, two hundred seventy-one thousand, seven hundred eighty".