9969545543 has 2 divisors, whose sum is σ = 9969545544. Its totient is φ = 9969545542.

The previous prime is 9969545513. The next prime is 9969545567. The reversal of 9969545543 is 3455459699.

It is a strong prime.

It is an emirp because it is prime and its reverse (3455459699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9969545543 - 2²² = 9965351239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9969545513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4984772771 + 4984772772.

It is an arithmetic number, because the mean of its divisors is an integer number (4984772772).

Almost surely, 2^9969545543 is an apocalyptic number.

9969545543 is a deficient number, since it is larger than the sum of its proper divisors (1).

9969545543 is an equidigital number, since it uses as much as digits as its factorization.

9969545543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26244000, while the sum is 59.

The square root of 9969545543 is about 99847.6116038836. The cubic root of 9969545543 is about 2152.2453947780.

The spelling of 9969545543 in words is "nine billion, nine hundred sixty-nine million, five hundred forty-five thousand, five hundred forty-three".