11020078309 has 2 divisors, whose sum is σ = 11020078310. Its totient is φ = 11020078308.

The previous prime is 11020078247. The next prime is 11020078319. The reversal of 11020078309 is 90387002011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6288014209 + 4732064100 = 79297^2 + 68790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11020078309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11020078319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510039154 + 5510039155.

It is an arithmetic number, because the mean of its divisors is an integer number (5510039155).

Almost surely, 2^11020078309 is an apocalyptic number.

It is an amenable number.

11020078309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020078309 is an equidigital number, since it uses as much as digits as its factorization.

11020078309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The spelling of 11020078309 in words is "eleven billion, twenty million, seventy-eight thousand, three hundred nine".