8545779779 has 2 divisors, whose sum is σ = 8545779780. Its totient is φ = 8545779778.

The previous prime is 8545779761. The next prime is 8545779787. The reversal of 8545779779 is 9779775458.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8545779779 - 2¹² = 8545775683 is a prime.

It is not a weakly prime, because it can be changed into another prime (8545779719) 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, 4272889889 + 4272889890.

It is an arithmetic number, because the mean of its divisors is an integer number (4272889890).

Almost surely, 2^8545779779 is an apocalyptic number.

8545779779 is a deficient number, since it is larger than the sum of its proper divisors (1).

8545779779 is an equidigital number, since it uses as much as digits as its factorization.

8545779779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155584800, while the sum is 68.

The square root of 8545779779 is about 92443.3868862451. The cubic root of 8545779779 is about 2044.4848608909.

The spelling of 8545779779 in words is "eight billion, five hundred forty-five million, seven hundred seventy-nine thousand, seven hundred seventy-nine".