320523555444 has 24 divisors (see below), whose sum is σ = 747907261920. Its totient is φ = 106838475744.

The previous prime is 320523555377. The next prime is 320523555463. The reversal of 320523555444 is 444555325023.

It is a junction number, because it is equal to n+sod(n) for n = 320523555396 and 320523555405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186862 + ... + 822170.

It is an arithmetic number, because the mean of its divisors is an integer number (31162802580).

Almost surely, 2^320523555444 is an apocalyptic number.

It is an amenable number.

320523555444 is an abundant number, since it is smaller than the sum of its proper divisors (427383706476).

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

320523555444 is a wasteful number, since it uses less digits than its factorization.

320523555444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677359 (or 677357 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 42.

The spelling of 320523555444 in words is "three hundred twenty billion, five hundred twenty-three million, five hundred fifty-five thousand, four hundred forty-four".