99688745543 has 2 divisors, whose sum is σ = 99688745544. Its totient is φ = 99688745542.

The previous prime is 99688745537. The next prime is 99688745551. The reversal of 99688745543 is 34554788699.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99688745543 - 2²⁴ = 99671968327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99688745593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49844372771 + 49844372772.

It is an arithmetic number, because the mean of its divisors is an integer number (49844372772).

Almost surely, 2^99688745543 is an apocalyptic number.

99688745543 is a deficient number, since it is larger than the sum of its proper divisors (1).

99688745543 is an equidigital number, since it uses as much as digits as its factorization.

99688745543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 261273600, while the sum is 68.

The spelling of 99688745543 in words is "ninety-nine billion, six hundred eighty-eight million, seven hundred forty-five thousand, five hundred forty-three".