1344634564643 has 4 divisors (see below), whose sum is σ = 1344638156400. Its totient is φ = 1344630972888.

The previous prime is 1344634564627. The next prime is 1344634564661. The reversal of 1344634564643 is 3464654364431.

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 1344634564643 - 2⁴ = 1344634564627 is a prime.

It is a super-2 number, since 2×1344634564643² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1344634564673) 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, 1159055 + ... + 2008152.

It is an arithmetic number, because the mean of its divisors is an integer number (336159539100).

Almost surely, 2^{1344634564643} is an apocalyptic number.

1344634564643 is a deficient number, since it is larger than the sum of its proper divisors (3591757).

1344634564643 is an equidigital number, since it uses as much as digits as its factorization.

1344634564643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591756.

The product of its digits is 29859840, while the sum is 53.

The spelling of 1344634564643 in words is "one trillion, three hundred forty-four billion, six hundred thirty-four million, five hundred sixty-four thousand, six hundred forty-three".