320604488781998 has 8 divisors (see below), whose sum is σ = 481019595596760. Its totient is φ = 160264623583080.

The previous prime is 320604488781961. The next prime is 320604488782001. The reversal of 320604488781998 is 899187884406023.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18810393308 + ... + 18810410351.

It is an arithmetic number, because the mean of its divisors is an integer number (60127449449595).

Almost surely, 2^{320604488781998} is an apocalyptic number.

320604488781998 is a deficient number, since it is larger than the sum of its proper divisors (160415106814762).

320604488781998 is a wasteful number, since it uses less digits than its factorization.

320604488781998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37620807922.

The product of its (nonzero) digits is 1337720832, while the sum is 77.

The spelling of 320604488781998 in words is "three hundred twenty trillion, six hundred four billion, four hundred eighty-eight million, seven hundred eighty-one thousand, nine hundred ninety-eight".