806338788061 has 2 divisors, whose sum is σ = 806338788062. Its totient is φ = 806338788060.

The previous prime is 806338787999. The next prime is 806338788083. The reversal of 806338788061 is 160887833608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 639696036100 + 166642751961 = 799810^2 + 408219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806338788061 is a prime.

It is a super-2 number, since 2×806338788061² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 806338787987 and 806338788005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806338780061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403169394030 + 403169394031.

It is an arithmetic number, because the mean of its divisors is an integer number (403169394031).

Almost surely, 2^806338788061 is an apocalyptic number.

It is an amenable number.

806338788061 is a deficient number, since it is larger than the sum of its proper divisors (1).

806338788061 is an equidigital number, since it uses as much as digits as its factorization.

806338788061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9289728, while the sum is 58.

The spelling of 806338788061 in words is "eight hundred six billion, three hundred thirty-eight million, seven hundred eighty-eight thousand, sixty-one".