320688538950 has 192 divisors, whose sum is σ = 876363909120. Its totient is φ = 77119311360.

The previous prime is 320688538939. The next prime is 320688538981. The reversal of 320688538950 is 59835886023.

It is a super-2 number, since 2×320688538950² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24694159 + ... + 24707141.

It is an arithmetic number, because the mean of its divisors is an integer number (4564395360).

Almost surely, 2^320688538950 is an apocalyptic number.

320688538950 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 320688538950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (438181954560).

320688538950 is an abundant number, since it is smaller than the sum of its proper divisors (555675370170).

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

320688538950 is a wasteful number, since it uses less digits than its factorization.

320688538950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13303 (or 13298 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 57.

The spelling of 320688538950 in words is "three hundred twenty billion, six hundred eighty-eight million, five hundred thirty-eight thousand, nine hundred fifty".