807942801859 has 4 divisors (see below), whose sum is σ = 850466107240. Its totient is φ = 765419496480.

The previous prime is 807942801857. The next prime is 807942801881. The reversal of 807942801859 is 958108249708.

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 807942801859 - 2¹ = 807942801857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 807942801797 and 807942801806.

It is not an unprimeable number, because it can be changed into a prime (807942801851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21261652662 + ... + 21261652699.

It is an arithmetic number, because the mean of its divisors is an integer number (212616526810).

Almost surely, 2^807942801859 is an apocalyptic number.

807942801859 is a deficient number, since it is larger than the sum of its proper divisors (42523305381).

807942801859 is a wasteful number, since it uses less digits than its factorization.

807942801859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42523305380.

The product of its (nonzero) digits is 11612160, while the sum is 61.

The spelling of 807942801859 in words is "eight hundred seven billion, nine hundred forty-two million, eight hundred one thousand, eight hundred fifty-nine".