7243313555668 has 6 divisors (see below), whose sum is σ = 12675798722426. Its totient is φ = 3621656777832.

The previous prime is 7243313555663. The next prime is 7243313555669. The reversal of 7243313555668 is 8665553133427.

It can be written as a sum of positive squares in only one way, i.e., 6311088547344 + 932225008324 = 2512188^2 + 965518^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7243313555663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 905414194455 + ... + 905414194462.

Almost surely, 2^{7243313555668} is an apocalyptic number.

It is an amenable number.

7243313555668 is a deficient number, since it is larger than the sum of its proper divisors (5432485166758).

7243313555668 is a wasteful number, since it uses less digits than its factorization.

7243313555668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810828388921 (or 1810828388919 counting only the distinct ones).

The product of its digits is 54432000, while the sum is 58.

The spelling of 7243313555668 in words is "seven trillion, two hundred forty-three billion, three hundred thirteen million, five hundred fifty-five thousand, six hundred sixty-eight".