220400004243344 has 40 divisors (see below), whose sum is σ = 429866218181400. Its totient is φ = 109469067264000.

The previous prime is 220400004243319. The next prime is 220400004243373. The reversal of 220400004243344 is 443342400004022.

It can be written as a sum of positive squares in 4 ways, for example, as 149692288614400 + 70707715628944 = 12234880^2 + 8408788^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220400004243344.

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, 69722669 + ... + 72815180.

It is an arithmetic number, because the mean of its divisors is an integer number (10746655454535).

Almost surely, 2^{220400004243344} is an apocalyptic number.

It is an amenable number.

220400004243344 is a deficient number, since it is larger than the sum of its proper divisors (209466213938056).

220400004243344 is a wasteful number, since it uses less digits than its factorization.

220400004243344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142538499 (or 142538493 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 220400004243344 its reverse (443342400004022), we get a palindrome (663742404247366).

The spelling of 220400004243344 in words is "two hundred twenty trillion, four hundred billion, four million, two hundred forty-three thousand, three hundred forty-four".