809114977671 has 64 divisors (see below), whose sum is σ = 1468887146496. Its totient is φ = 382522492800.

The previous prime is 809114977663. The next prime is 809114977673. The reversal of 809114977671 is 176779411908.

It is not a de Polignac number, because 809114977671 - 2³ = 809114977663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809114977673) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1684221 + ... + 2110646.

It is an arithmetic number, because the mean of its divisors is an integer number (22951361664).

Almost surely, 2^809114977671 is an apocalyptic number.

809114977671 is a deficient number, since it is larger than the sum of its proper divisors (659772168825).

809114977671 is a wasteful number, since it uses less digits than its factorization.

809114977671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3794972.

The product of its (nonzero) digits is 5334336, while the sum is 60.

The spelling of 809114977671 in words is "eight hundred nine billion, one hundred fourteen million, nine hundred seventy-seven thousand, six hundred seventy-one".