7800109243 has 2 divisors, whose sum is σ = 7800109244. Its totient is φ = 7800109242.

The previous prime is 7800109217. The next prime is 7800109259. The reversal of 7800109243 is 3429010087.

It is a strong prime.

It is an emirp because it is prime and its reverse (3429010087) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7800109243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7800109199 and 7800109208.

It is not a weakly prime, because it can be changed into another prime (7800109283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900054621 + 3900054622.

It is an arithmetic number, because the mean of its divisors is an integer number (3900054622).

Almost surely, 2^7800109243 is an apocalyptic number.

7800109243 is a deficient number, since it is larger than the sum of its proper divisors (1).

7800109243 is an equidigital number, since it uses as much as digits as its factorization.

7800109243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 7800109243 is about 88318.2271278132. The cubic root of 7800109243 is about 1983.2017411801.

The spelling of 7800109243 in words is "seven billion, eight hundred million, one hundred nine thousand, two hundred forty-three".