1311454543420 has 48 divisors (see below), whose sum is σ = 3147564127680. Its totient is φ = 449631097344.

The previous prime is 1311454543381. The next prime is 1311454543423. The reversal of 1311454543420 is 243454541131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311454543420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311454543423) 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 15 ways as a sum of consecutive naturals, for example, 8167752 + ... + 8326768.

It is an arithmetic number, because the mean of its divisors is an integer number (65574252660).

Almost surely, 2^{1311454543420} is an apocalyptic number.

1311454543420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311454543420 is an abundant number, since it is smaller than the sum of its proper divisors (1836109584260).

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

1311454543420 is a wasteful number, since it uses less digits than its factorization.

1311454543420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217942 (or 217940 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 1311454543420 in words is "one trillion, three hundred eleven billion, four hundred fifty-four million, five hundred forty-three thousand, four hundred twenty".