743221243499873 has 2 divisors, whose sum is σ = 743221243499874. Its totient is φ = 743221243499872.

The previous prime is 743221243499827. The next prime is 743221243499881. The reversal of 743221243499873 is 378994342122347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 460363068581329 + 282858174918544 = 21456073^2 + 16818388^2 .

It is a cyclic number.

It is not a de Polignac number, because 743221243499873 - 2⁶ = 743221243499809 is a prime.

It is a super-2 number, since 2×743221243499873² (a number of 31 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (743221243499173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371610621749936 + 371610621749937.

It is an arithmetic number, because the mean of its divisors is an integer number (371610621749937).

Almost surely, 2^{743221243499873} is an apocalyptic number.

It is an amenable number.

743221243499873 is a deficient number, since it is larger than the sum of its proper divisors (1).

743221243499873 is an equidigital number, since it uses as much as digits as its factorization.

743221243499873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 438939648, while the sum is 68.

The spelling of 743221243499873 in words is "seven hundred forty-three trillion, two hundred twenty-one billion, two hundred forty-three million, four hundred ninety-nine thousand, eight hundred seventy-three".