809801359408 has 10 divisors (see below), whose sum is σ = 1568990133884. Its totient is φ = 404900679696.

The previous prime is 809801359391. The next prime is 809801359453. The reversal of 809801359408 is 804953108908.

It is a super-2 number, since 2×809801359408² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 25306292466 + ... + 25306292497.

Almost surely, 2^809801359408 is an apocalyptic number.

It is an amenable number.

809801359408 is a deficient number, since it is larger than the sum of its proper divisors (759188774476).

809801359408 is a wasteful number, since it uses less digits than its factorization.

809801359408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50612584971 (or 50612584965 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 809801359408 in words is "eight hundred nine billion, eight hundred one million, three hundred fifty-nine thousand, four hundred eight".