199804369585 has 16 divisors (see below), whose sum is σ = 242213550912. Its totient is φ = 158212264000.

The previous prime is 199804369571. The next prime is 199804369619. The reversal of 199804369585 is 585963408991.

It is a de Polignac number, because none of the positive numbers 2^k-199804369585 is a prime.

It is a super-2 number, since 2×199804369585² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199804369585.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1631130 + ... + 1749340.

It is an arithmetic number, because the mean of its divisors is an integer number (15138346932).

Almost surely, 2^199804369585 is an apocalyptic number.

It is an amenable number.

199804369585 is a deficient number, since it is larger than the sum of its proper divisors (42409181327).

199804369585 is a wasteful number, since it uses less digits than its factorization.

199804369585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121664.

The product of its (nonzero) digits is 83980800, while the sum is 67.

The spelling of 199804369585 in words is "one hundred ninety-nine billion, eight hundred four million, three hundred sixty-nine thousand, five hundred eighty-five".