806255066493 has 10 divisors (see below), whose sum is σ = 1204405716734. Its totient is φ = 537503377608.

The previous prime is 806255066437. The next prime is 806255066537. The reversal of 806255066493 is 394660552608.

806255066493 is a `hidden beast` number, since 8 + 0 + 625 + 5 + 0 + 6 + 6 + 4 + 9 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 421094570724 + 385160495769 = 648918^2 + 620613^2 .

It is not a de Polignac number, because 806255066493 - 2⁹ = 806255065981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806255066893) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4976883046 + ... + 4976883207.

Almost surely, 2^806255066493 is an apocalyptic number.

It is an amenable number.

806255066493 is a deficient number, since it is larger than the sum of its proper divisors (398150650241).

806255066493 is an equidigital number, since it uses as much as digits as its factorization.

806255066493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9953766265 (or 9953766256 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 806255066493 in words is "eight hundred six billion, two hundred fifty-five million, sixty-six thousand, four hundred ninety-three".