320380581554 has 16 divisors (see below), whose sum is σ = 555097906656. Its totient is φ = 137061211200.

The previous prime is 320380581553. The next prime is 320380581611. The reversal of 320380581554 is 455185083023.

It is not an unprimeable number, because it can be changed into a prime (320380581553) 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 7 ways as a sum of consecutive naturals, for example, 428315912 + ... + 428316659.

It is an arithmetic number, because the mean of its divisors is an integer number (34693619166).

Almost surely, 2^320380581554 is an apocalyptic number.

320380581554 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

320380581554 is a deficient number, since it is larger than the sum of its proper divisors (234717325102).

320380581554 is a wasteful number, since it uses less digits than its factorization.

320380581554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856632601.

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 320380581554 in words is "three hundred twenty billion, three hundred eighty million, five hundred eighty-one thousand, five hundred fifty-four".