809199434724 has 12 divisors (see below), whose sum is σ = 1888132014384. Its totient is φ = 269733144904.

The previous prime is 809199434717. The next prime is 809199434731. The reversal of 809199434724 is 427434991908.

It is an interprime number because it is at equal distance from previous prime (809199434717) and next prime (809199434731).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×809199434724² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33716643102 + ... + 33716643125.

It is an arithmetic number, because the mean of its divisors is an integer number (157344334532).

Almost surely, 2^809199434724 is an apocalyptic number.

It is an amenable number.

809199434724 is an abundant number, since it is smaller than the sum of its proper divisors (1078932579660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

809199434724 is a wasteful number, since it uses less digits than its factorization.

809199434724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67433286234 (or 67433286232 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 809199434724 in words is "eight hundred nine billion, one hundred ninety-nine million, four hundred thirty-four thousand, seven hundred twenty-four".