320432478780 has 192 divisors, whose sum is σ = 988442663040. Its totient is φ = 77199015936.

The previous prime is 320432478767. The next prime is 320432478781. The reversal of 320432478780 is 87874234023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320432478781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5086032 + ... + 5148648.

It is an arithmetic number, because the mean of its divisors is an integer number (5148138870).

Almost surely, 2^320432478780 is an apocalyptic number.

320432478780 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 320432478780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494221331520).

320432478780 is an abundant number, since it is smaller than the sum of its proper divisors (668010184260).

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

320432478780 is a wasteful number, since it uses less digits than its factorization.

320432478780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62848 (or 62846 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 48.

The spelling of 320432478780 in words is "three hundred twenty billion, four hundred thirty-two million, four hundred seventy-eight thousand, seven hundred eighty".