9969652543 has 4 divisors (see below), whose sum is σ = 9996381208. Its totient is φ = 9942923880.

The previous prime is 9969652513. The next prime is 9969652579. The reversal of 9969652543 is 3452569699.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9969652543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9969652513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13363773 + ... + 13364518.

It is an arithmetic number, because the mean of its divisors is an integer number (2499095302).

Almost surely, 2^9969652543 is an apocalyptic number.

9969652543 is a deficient number, since it is larger than the sum of its proper divisors (26728665).

9969652543 is a wasteful number, since it uses less digits than its factorization.

9969652543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26728664.

The product of its digits is 15746400, while the sum is 58.

The square root of 9969652543 is about 99848.1474189682. The cubic root of 9969652543 is about 2152.2530945417.

The spelling of 9969652543 in words is "nine billion, nine hundred sixty-nine million, six hundred fifty-two thousand, five hundred forty-three".