198873788511 has 32 divisors (see below), whose sum is σ = 279547107840. Its totient is φ = 125511408000.

The previous prime is 198873788497. The next prime is 198873788521. The reversal of 198873788511 is 115887378891.

It is not a de Polignac number, because 198873788511 - 2⁹ = 198873787999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198873788521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24673200 + ... + 24681258.

It is an arithmetic number, because the mean of its divisors is an integer number (8735847120).

Almost surely, 2^198873788511 is an apocalyptic number.

198873788511 is a deficient number, since it is larger than the sum of its proper divisors (80673319329).

198873788511 is a wasteful number, since it uses less digits than its factorization.

198873788511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11727.

The product of its digits is 27095040, while the sum is 66.

The spelling of 198873788511 in words is "one hundred ninety-eight billion, eight hundred seventy-three million, seven hundred eighty-eight thousand, five hundred eleven".