320221473278 has 8 divisors (see below), whose sum is σ = 548951097072. Its totient is φ = 137237774256.

The previous prime is 320221473251. The next prime is 320221473293. The reversal of 320221473278 is 872374122023.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11436481175 + ... + 11436481202.

It is an arithmetic number, because the mean of its divisors is an integer number (68618887134).

Almost surely, 2^320221473278 is an apocalyptic number.

320221473278 is a deficient number, since it is larger than the sum of its proper divisors (228729623794).

320221473278 is a wasteful number, since it uses less digits than its factorization.

320221473278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22872962386.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 320221473278 in words is "three hundred twenty billion, two hundred twenty-one million, four hundred seventy-three thousand, two hundred seventy-eight".