1468544388109 has 4 divisors (see below), whose sum is σ = 1468564910620. Its totient is φ = 1468523865600.

The previous prime is 1468544388061. The next prime is 1468544388131. The reversal of 1468544388109 is 9018834458641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 340694016100 + 1127850372009 = 583690^2 + 1062003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1468544388109 - 2¹¹ = 1468544386061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1468544388709) 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 3 ways as a sum of consecutive naturals, for example, 10153542 + ... + 10297159.

It is an arithmetic number, because the mean of its divisors is an integer number (367141227655).

Almost surely, 2^{1468544388109} is an apocalyptic number.

It is an amenable number.

1468544388109 is a deficient number, since it is larger than the sum of its proper divisors (20522511).

1468544388109 is an equidigital number, since it uses as much as digits as its factorization.

1468544388109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20522510.

The product of its (nonzero) digits is 26542080, while the sum is 61.

The spelling of 1468544388109 in words is "one trillion, four hundred sixty-eight billion, five hundred forty-four million, three hundred eighty-eight thousand, one hundred nine".