806338787999 has 2 divisors, whose sum is σ = 806338788000. Its totient is φ = 806338787998.

The previous prime is 806338787983. The next prime is 806338788061. The reversal of 806338787999 is 999787833608.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 806338787999 - 2⁴ = 806338787983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806338787929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403169393999 + 403169394000.

It is an arithmetic number, because the mean of its divisors is an integer number (403169394000).

Almost surely, 2^806338787999 is an apocalyptic number.

806338787999 is a deficient number, since it is larger than the sum of its proper divisors (1).

806338787999 is an equidigital number, since it uses as much as digits as its factorization.

806338787999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987614208, while the sum is 77.

The spelling of 806338787999 in words is "eight hundred six billion, three hundred thirty-eight million, seven hundred eighty-seven thousand, nine hundred ninety-nine".