7780509223 has 2 divisors, whose sum is σ = 7780509224. Its totient is φ = 7780509222.

The previous prime is 7780509199. The next prime is 7780509229. The reversal of 7780509223 is 3229050877.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7780509223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7780509223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7780509229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3890254611 + 3890254612.

It is an arithmetic number, because the mean of its divisors is an integer number (3890254612).

Almost surely, 2^7780509223 is an apocalyptic number.

7780509223 is a deficient number, since it is larger than the sum of its proper divisors (1).

7780509223 is an equidigital number, since it uses as much as digits as its factorization.

7780509223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 7780509223 is about 88207.1948482662. The cubic root of 7780509223 is about 1981.5392261167.

The spelling of 7780509223 in words is "seven billion, seven hundred eighty million, five hundred nine thousand, two hundred twenty-three".