320560578378 has 32 divisors (see below), whose sum is σ = 724430692800. Its totient is φ = 105042448368.

The previous prime is 320560578367. The next prime is 320560578379. The reversal of 320560578378 is 873875065023.

320560578378 is a `hidden beast` number, since 3 + 2 + 0 + 5 + 60 + 578 + 3 + 7 + 8 = 666.

It is a super-3 number, since 3×320560578378³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (320560578379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50304501 + ... + 50310872.

It is an arithmetic number, because the mean of its divisors is an integer number (22638459150).

Almost surely, 2^320560578378 is an apocalyptic number.

320560578378 is an abundant number, since it is smaller than the sum of its proper divisors (403870114422).

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

320560578378 is a wasteful number, since it uses less digits than its factorization.

320560578378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100615443 (or 100615437 counting only the distinct ones).

The product of its (nonzero) digits is 8467200, while the sum is 54.

The spelling of 320560578378 in words is "three hundred twenty billion, five hundred sixty million, five hundred seventy-eight thousand, three hundred seventy-eight".