320745754340 has 48 divisors (see below), whose sum is σ = 766747175040. Its totient is φ = 111563738880.

The previous prime is 320745754319. The next prime is 320745754369. The reversal of 320745754340 is 43457547023.

It is a super-3 number, since 3×320745754340³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 320745754291 and 320745754300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31689185 + ... + 31699304.

It is an arithmetic number, because the mean of its divisors is an integer number (15973899480).

Almost surely, 2^320745754340 is an apocalyptic number.

It is an amenable number.

320745754340 is an abundant number, since it is smaller than the sum of its proper divisors (446001420700).

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

320745754340 is a wasteful number, since it uses less digits than its factorization.

320745754340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63388532 (or 63388530 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 44.

The spelling of 320745754340 in words is "three hundred twenty billion, seven hundred forty-five million, seven hundred fifty-four thousand, three hundred forty".