9999998962543 has 2 divisors, whose sum is σ = 9999998962544. Its totient is φ = 9999998962542.

The previous prime is 9999998962529. The next prime is 9999998962559. The reversal of 9999998962543 is 3452698999999.

9999998962543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9999998962543 - 2²⁹ = 9999462091631 is a prime.

It is a super-2 number, since 2×9999998962543² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9999998962573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999999481271 + 4999999481272.

It is an arithmetic number, because the mean of its divisors is an integer number (4999999481272).

Almost surely, 2^{9999998962543} is an apocalyptic number.

9999998962543 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999998962543 is an equidigital number, since it uses as much as digits as its factorization.

9999998962543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27549901440, while the sum is 91.

The spelling of 9999998962543 in words is "nine trillion, nine hundred ninety-nine billion, nine hundred ninety-eight million, nine hundred sixty-two thousand, five hundred forty-three".