198127330785 has 24 divisors (see below), whose sum is σ = 343555527744. Its totient is φ = 105626426400.

The previous prime is 198127330763. The next prime is 198127330813. The reversal of 198127330785 is 587033721891.

It is a happy number.

198127330785 is a `hidden beast` number, since 198 + 1 + 2 + 73 + 307 + 85 = 666.

It is not a de Polignac number, because 198127330785 - 2¹⁰ = 198127329761 is a prime.

It is a super-3 number, since 3×198127330785³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 748167 + ... + 977756.

It is an arithmetic number, because the mean of its divisors is an integer number (14314813656).

Almost surely, 2^198127330785 is an apocalyptic number.

198127330785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198127330785 is a deficient number, since it is larger than the sum of its proper divisors (145428196959).

198127330785 is a wasteful number, since it uses less digits than its factorization.

198127330785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728485 (or 1728482 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 198127330785 in words is "one hundred ninety-eight billion, one hundred twenty-seven million, three hundred thirty thousand, seven hundred eighty-five".