1311432055552 has 72 divisors (see below), whose sum is σ = 2738049602400. Its totient is φ = 625715650560.

The previous prime is 1311432055543. The next prime is 1311432055553. The reversal of 1311432055552 is 2555502341131.

It is not an unprimeable number, because it can be changed into a prime (1311432055553) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2214324 + ... + 2743372.

It is an arithmetic number, because the mean of its divisors is an integer number (38028466700).

Almost surely, 2^{1311432055552} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1311432055552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1369024801200).

1311432055552 is an abundant number, since it is smaller than the sum of its proper divisors (1426617546848).

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

1311432055552 is an equidigital number, since it uses as much as digits as its factorization.

1311432055552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529509 (or 529495 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 37.

Adding to 1311432055552 its reverse (2555502341131), we get a palindrome (3866934396683).

The spelling of 1311432055552 in words is "one trillion, three hundred eleven billion, four hundred thirty-two million, fifty-five thousand, five hundred fifty-two".