1321450033552 has 40 divisors (see below), whose sum is σ = 2793789311040. Its totient is φ = 600503306880.

The previous prime is 1321450033537. The next prime is 1321450033559. The reversal of 1321450033552 is 2553300541231.

It is not an unprimeable number, because it can be changed into a prime (1321450033559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 291927 + ... + 1651702.

It is an arithmetic number, because the mean of its divisors is an integer number (69844732776).

Almost surely, 2^{1321450033552} is an apocalyptic number.

It is an amenable number.

1321450033552 is an abundant number, since it is smaller than the sum of its proper divisors (1472339277488).

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

1321450033552 is a wasteful number, since it uses less digits than its factorization.

1321450033552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947511 (or 1947505 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 34.

Adding to 1321450033552 its reverse (2553300541231), we get a palindrome (3874750574783).

The spelling of 1321450033552 in words is "one trillion, three hundred twenty-one billion, four hundred fifty million, thirty-three thousand, five hundred fifty-two".