1344543545399 has 4 divisors (see below), whose sum is σ = 1390907115960. Its totient is φ = 1298179974840.

The previous prime is 1344543545347. The next prime is 1344543545461. The reversal of 1344543545399 is 9935453454431.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1344543545399 - 2³² = 1340248578103 is a prime.

It is a super-2 number, since 2×1344543545399² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344543545099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23181785237 + ... + 23181785294.

It is an arithmetic number, because the mean of its divisors is an integer number (347726778990).

Almost surely, 2^{1344543545399} is an apocalyptic number.

1344543545399 is a deficient number, since it is larger than the sum of its proper divisors (46363570561).

1344543545399 is an equidigital number, since it uses as much as digits as its factorization.

1344543545399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46363570560.

The product of its digits is 69984000, while the sum is 59.

The spelling of 1344543545399 in words is "one trillion, three hundred forty-four billion, five hundred forty-three million, five hundred forty-five thousand, three hundred ninety-nine".