805861048663 has 16 divisors (see below), whose sum is σ = 889774300800. Its totient is φ = 723724541280.

The previous prime is 805861048661. The next prime is 805861048679. The reversal of 805861048663 is 366840168508.

It is a cyclic number.

It is not a de Polignac number, because 805861048663 - 2¹ = 805861048661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (805861048661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21773908 + ... + 21810886.

It is an arithmetic number, because the mean of its divisors is an integer number (55610893800).

Almost surely, 2^805861048663 is an apocalyptic number.

805861048663 is a gapful number since it is divisible by the number (83) formed by its first and last digit.

805861048663 is a deficient number, since it is larger than the sum of its proper divisors (83913252137).

805861048663 is a wasteful number, since it uses less digits than its factorization.

805861048663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60942.

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 805861048663 in words is "eight hundred five billion, eight hundred sixty-one million, forty-eight thousand, six hundred sixty-three".