198213495611 has 16 divisors (see below), whose sum is σ = 208369776384. Its totient is φ = 188312602464.

The previous prime is 198213495593. The next prime is 198213495629. The reversal of 198213495611 is 116594312891.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (198213495593) and next prime (198213495629).

It is not a de Polignac number, because 198213495611 - 2¹⁴ = 198213479227 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 198213495611.

It is not an unprimeable number, because it can be changed into a prime (198213495691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5593796 + ... + 5629118.

It is an arithmetic number, because the mean of its divisors is an integer number (13023111024).

Almost surely, 2^198213495611 is an apocalyptic number.

198213495611 is a deficient number, since it is larger than the sum of its proper divisors (10156280773).

198213495611 is a wasteful number, since it uses less digits than its factorization.

198213495611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38930.

The product of its digits is 466560, while the sum is 50.

The spelling of 198213495611 in words is "one hundred ninety-eight billion, two hundred thirteen million, four hundred ninety-five thousand, six hundred eleven".