1331761411552 has 96 divisors (see below), whose sum is σ = 3083875320960. Its totient is φ = 558128862720.

The previous prime is 1331761411543. The next prime is 1331761411579. The reversal of 1331761411552 is 2551141671331.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3761383 + ... + 4100185.

It is an arithmetic number, because the mean of its divisors is an integer number (32123701260).

Almost surely, 2^{1331761411552} 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 1331761411552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1541937660480).

1331761411552 is an abundant number, since it is smaller than the sum of its proper divisors (1752113909408).

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

1331761411552 is a wasteful number, since it uses less digits than its factorization.

1331761411552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339696 (or 339688 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The spelling of 1331761411552 in words is "one trillion, three hundred thirty-one billion, seven hundred sixty-one million, four hundred eleven thousand, five hundred fifty-two".