198720265115 has 16 divisors (see below), whose sum is σ = 246926681280. Its totient is φ = 153345279360.

The previous prime is 198720265111. The next prime is 198720265151. The reversal of 198720265115 is 511562027891.

It is a happy number.

It is not a de Polignac number, because 198720265115 - 2² = 198720265111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 198720265115.

It is not an unprimeable number, because it can be changed into a prime (198720265111) 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, 515144 + ... + 814133.

It is an arithmetic number, because the mean of its divisors is an integer number (15432917580).

Almost surely, 2^198720265115 is an apocalyptic number.

198720265115 is a deficient number, since it is larger than the sum of its proper divisors (48206416165).

198720265115 is a wasteful number, since it uses less digits than its factorization.

198720265115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330342.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 198720265115 in words is "one hundred ninety-eight billion, seven hundred twenty million, two hundred sixty-five thousand, one hundred fifteen".