8277778123 has 2 divisors, whose sum is σ = 8277778124. Its totient is φ = 8277778122.

The previous prime is 8277778097. The next prime is 8277778139. The reversal of 8277778123 is 3218777728.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8277778123 is a prime.

It is a super-2 number, since 2×8277778123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8277775123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4138889061 + 4138889062.

It is an arithmetic number, because the mean of its divisors is an integer number (4138889062).

Almost surely, 2^8277778123 is an apocalyptic number.

8277778123 is a deficient number, since it is larger than the sum of its proper divisors (1).

8277778123 is an equidigital number, since it uses as much as digits as its factorization.

8277778123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1843968, while the sum is 52.

The square root of 8277778123 is about 90982.2956569024. The cubic root of 8277778123 is about 2022.8853093992.

The spelling of 8277778123 in words is "eight billion, two hundred seventy-seven million, seven hundred seventy-eight thousand, one hundred twenty-three".