8004265991 has 2 divisors, whose sum is σ = 8004265992. Its totient is φ = 8004265990.

The previous prime is 8004265987. The next prime is 8004265993. The reversal of 8004265991 is 1995624008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8004265991 - 2² = 8004265987 is a prime.

It is a Sophie Germain prime.

Together with 8004265993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8004265993) 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, 4002132995 + 4002132996.

It is an arithmetic number, because the mean of its divisors is an integer number (4002132996).

Almost surely, 2^8004265991 is an apocalyptic number.

8004265991 is a deficient number, since it is larger than the sum of its proper divisors (1).

8004265991 is an equidigital number, since it uses as much as digits as its factorization.

8004265991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 8004265991 is about 89466.5635363290. The cubic root of 8004265991 is about 2000.3554360789.

Adding to 8004265991 its reverse (1995624008), we get a palindrome (9999889999).

The spelling of 8004265991 in words is "eight billion, four million, two hundred sixty-five thousand, nine hundred ninety-one".