805877616667 has 4 divisors (see below), whose sum is σ = 807887286936. Its totient is φ = 803867946400.

The previous prime is 805877616563. The next prime is 805877616671. The reversal of 805877616667 is 766616778508.

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 805877616667 - 2¹⁵ = 805877583899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (805877616697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1004834533 + ... + 1004835334.

It is an arithmetic number, because the mean of its divisors is an integer number (201971821734).

Almost surely, 2^805877616667 is an apocalyptic number.

805877616667 is a deficient number, since it is larger than the sum of its proper divisors (2009670269).

805877616667 is a wasteful number, since it uses less digits than its factorization.

805877616667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2009670268.

The product of its (nonzero) digits is 142248960, while the sum is 67.

The spelling of 805877616667 in words is "eight hundred five billion, eight hundred seventy-seven million, six hundred sixteen thousand, six hundred sixty-seven".