1344645405220 has 96 divisors (see below), whose sum is σ = 3052687575168. Its totient is φ = 494572925952.

The previous prime is 1344645405203. The next prime is 1344645405247. The reversal of 1344645405220 is 225045464431.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170571399 + ... + 170579281.

It is an arithmetic number, because the mean of its divisors is an integer number (31798828908).

Almost surely, 2^{1344645405220} is an apocalyptic number.

1344645405220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1344645405220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526343787584).

1344645405220 is an abundant number, since it is smaller than the sum of its proper divisors (1708042169948).

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

1344645405220 is a wasteful number, since it uses less digits than its factorization.

1344645405220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10349 (or 10347 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 40.

The spelling of 1344645405220 in words is "one trillion, three hundred forty-four billion, six hundred forty-five million, four hundred five thousand, two hundred twenty".