199111080305 has 8 divisors (see below), whose sum is σ = 239011988712. Its totient is φ = 159236402688.

The previous prime is 199111080283. The next prime is 199111080349. The reversal of 199111080305 is 503080111991.

It can be written as a sum of positive squares in 4 ways, for example, as 82267433329 + 116843646976 = 286823^2 + 341824^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199111080305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6540992 + ... + 6571361.

It is an arithmetic number, because the mean of its divisors is an integer number (29876498589).

Almost surely, 2^199111080305 is an apocalyptic number.

It is an amenable number.

199111080305 is a deficient number, since it is larger than the sum of its proper divisors (39900908407).

199111080305 is a wasteful number, since it uses less digits than its factorization.

199111080305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13115395.

The product of its (nonzero) digits is 9720, while the sum is 38.

The spelling of 199111080305 in words is "one hundred ninety-nine billion, one hundred eleven million, eighty thousand, three hundred five".