1552223440000 has 80 divisors (see below), whose sum is σ = 3864163439070. Its totient is φ = 620889344000.

The previous prime is 1552223439967. The next prime is 1552223440037. The reversal of 1552223440000 is 443222551.

It can be written as a sum of positive squares in 5 ways, for example, as 321561580096 + 1230661859904 = 567064^2 + 1109352^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9621397 + ... + 9781396.

Almost surely, 2^{1552223440000} is an apocalyptic number.

1552223440000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1552223440000 is an abundant number, since it is smaller than the sum of its proper divisors (2311939999070).

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

1552223440000 is an frugal number, since it uses more digits than its factorization.

1552223440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19402827 (or 19402800 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 1552223440000 its reverse (443222551), we get a palindrome (1552666662551).

The spelling of 1552223440000 in words is "one trillion, five hundred fifty-two billion, two hundred twenty-three million, four hundred forty thousand".