806290975815839 has 4 divisors (see below), whose sum is σ = 810468649265856. Its totient is φ = 802113302365824.

The previous prime is 806290975815817. The next prime is 806290975815863. The reversal of 806290975815839 is 938518579092608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 806290975815839 - 2¹⁶ = 806290975750303 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 (806290975814839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2088836724719 + ... + 2088836725104.

It is an arithmetic number, because the mean of its divisors is an integer number (202617162316464).

Almost surely, 2^{806290975815839} is an apocalyptic number.

806290975815839 is a deficient number, since it is larger than the sum of its proper divisors (4177673450017).

806290975815839 is a wasteful number, since it uses less digits than its factorization.

806290975815839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4177673450016.

The product of its (nonzero) digits is 2351462400, while the sum is 80.

The spelling of 806290975815839 in words is "eight hundred six trillion, two hundred ninety billion, nine hundred seventy-five million, eight hundred fifteen thousand, eight hundred thirty-nine".