8100879977 has 2 divisors, whose sum is σ = 8100879978. Its totient is φ = 8100879976.

The previous prime is 8100879961. The next prime is 8100880031. The reversal of 8100879977 is 7799780018.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8097120256 + 3759721 = 89984^2 + 1939^2 .

It is a cyclic number.

It is not a de Polignac number, because 8100879977 - 2⁴ = 8100879961 is a prime.

It is not a weakly prime, because it can be changed into another prime (8100870977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4050439988 + 4050439989.

It is an arithmetic number, because the mean of its divisors is an integer number (4050439989).

Almost surely, 2^8100879977 is an apocalyptic number.

It is an amenable number.

8100879977 is a deficient number, since it is larger than the sum of its proper divisors (1).

8100879977 is an equidigital number, since it uses as much as digits as its factorization.

8100879977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1778112, while the sum is 56.

The square root of 8100879977 is about 90004.8886283406. Note that the first 3 decimals coincide. The cubic root of 8100879977 is about 2008.3715742302.

The spelling of 8100879977 in words is "eight billion, one hundred million, eight hundred seventy-nine thousand, nine hundred seventy-seven".