8819999999977 has 2 divisors, whose sum is σ = 8819999999978. Its totient is φ = 8819999999976.

The previous prime is 8819999999971. The next prime is 8820000000011. The reversal of 8819999999977 is 7799999999188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7404254597776 + 1415745402201 = 2721076^2 + 1189851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8819999999977 is a prime.

It is not a weakly prime, because it can be changed into another prime (8819999999971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4409999999988 + 4409999999989.

It is an arithmetic number, because the mean of its divisors is an integer number (4409999999989).

Almost surely, 2^{8819999999977} is an apocalyptic number.

It is an amenable number.

8819999999977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8819999999977 is an equidigital number, since it uses as much as digits as its factorization.

8819999999977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134994517056, while the sum is 103.

The spelling of 8819999999977 in words is "eight trillion, eight hundred nineteen billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-seven".