1344621465543 has 24 divisors (see below), whose sum is σ = 1849310370432. Its totient is φ = 868903985248.

The previous prime is 1344621465521. The next prime is 1344621465547. The reversal of 1344621465543 is 3455641264431.

It is not a de Polignac number, because 1344621465543 - 2⁵ = 1344621465511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1344621465492 and 1344621465501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344621465547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261771 + ... + 1660652.

It is an arithmetic number, because the mean of its divisors is an integer number (77054598768).

Almost surely, 2^{1344621465543} is an apocalyptic number.

1344621465543 is a deficient number, since it is larger than the sum of its proper divisors (504688904889).

1344621465543 is an equidigital number, since it uses as much as digits as its factorization.

1344621465543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922615 (or 1922562 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 48.

The spelling of 1344621465543 in words is "one trillion, three hundred forty-four billion, six hundred twenty-one million, four hundred sixty-five thousand, five hundred forty-three".