109999978343 has 2 divisors, whose sum is σ = 109999978344. Its totient is φ = 109999978342.

The previous prime is 109999978301. The next prime is 109999978373. The reversal of 109999978343 is 343879999901.

It is a strong prime.

It is an emirp because it is prime and its reverse (343879999901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109999978343 - 2¹² = 109999974247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109999978373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54999989171 + 54999989172.

It is an arithmetic number, because the mean of its divisors is an integer number (54999989172).

Almost surely, 2^109999978343 is an apocalyptic number.

109999978343 is a deficient number, since it is larger than the sum of its proper divisors (1).

109999978343 is an equidigital number, since it uses as much as digits as its factorization.

109999978343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119042784, while the sum is 71.

The spelling of 109999978343 in words is "one hundred nine billion, nine hundred ninety-nine million, nine hundred seventy-eight thousand, three hundred forty-three".