320988471890 has 8 divisors (see below), whose sum is σ = 577779249420. Its totient is φ = 128395388752.

The previous prime is 320988471877. The next prime is 320988471943. The reversal of 320988471890 is 98174889023.

It can be written as a sum of positive squares in 2 ways, for example, as 264174412441 + 56814059449 = 513979^2 + 238357^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16049423585 + ... + 16049423604.

Almost surely, 2^320988471890 is an apocalyptic number.

320988471890 is a deficient number, since it is larger than the sum of its proper divisors (256790777530).

320988471890 is a wasteful number, since it uses less digits than its factorization.

320988471890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32098847196.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The spelling of 320988471890 in words is "three hundred twenty billion, nine hundred eighty-eight million, four hundred seventy-one thousand, eight hundred ninety".