993234217543 has 2 divisors, whose sum is σ = 993234217544. Its totient is φ = 993234217542.

The previous prime is 993234217541. The next prime is 993234217571. The reversal of 993234217543 is 345712432399.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 993234217543 - 2¹ = 993234217541 is a prime.

Together with 993234217541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993234217541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496617108771 + 496617108772.

It is an arithmetic number, because the mean of its divisors is an integer number (496617108772).

Almost surely, 2^993234217543 is an apocalyptic number.

993234217543 is a deficient number, since it is larger than the sum of its proper divisors (1).

993234217543 is an equidigital number, since it uses as much as digits as its factorization.

993234217543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 52.

The spelling of 993234217543 in words is "nine hundred ninety-three billion, two hundred thirty-four million, two hundred seventeen thousand, five hundred forty-three".