320453044040400 has 240 divisors, whose sum is σ = 1110026888089344. Its totient is φ = 78716208496640.

The previous prime is 320453044040351. The next prime is 320453044040443. The reversal of 320453044040400 is 4040440354023.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166152717 + ... + 168070316.

Almost surely, 2^{320453044040400} is an apocalyptic number.

320453044040400 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320453044040400 is an abundant number, since it is smaller than the sum of its proper divisors (789573844048944).

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

320453044040400 is a wasteful number, since it uses less digits than its factorization.

320453044040400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334223118 (or 334223107 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 33.

Adding to 320453044040400 its reverse (4040440354023), we get a palindrome (324493484394423).

The spelling of 320453044040400 in words is "three hundred twenty trillion, four hundred fifty-three billion, forty-four million, forty thousand, four hundred".