8120970911 has 2 divisors, whose sum is σ = 8120970912. Its totient is φ = 8120970910.

The previous prime is 8120970883. The next prime is 8120970917. The reversal of 8120970911 is 1190790218.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8120970911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8120970917) 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, 4060485455 + 4060485456.

It is an arithmetic number, because the mean of its divisors is an integer number (4060485456).

Almost surely, 2^8120970911 is an apocalyptic number.

8120970911 is a deficient number, since it is larger than the sum of its proper divisors (1).

8120970911 is an equidigital number, since it uses as much as digits as its factorization.

8120970911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 38.

The square root of 8120970911 is about 90116.4297506287. The cubic root of 8120970911 is about 2010.0305194907.

The spelling of 8120970911 in words is "eight billion, one hundred twenty million, nine hundred seventy thousand, nine hundred eleven".