198041178451 has 8 divisors (see below), whose sum is σ = 200329447824. Its totient is φ = 195764674560.

The previous prime is 198041178403. The next prime is 198041178481. The reversal of 198041178451 is 154871140891.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 198041178451 - 2¹⁵ = 198041145683 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198041178395 and 198041178404.

It is not an unprimeable number, because it can be changed into a prime (198041178481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2907510 + ... + 2974843.

It is an arithmetic number, because the mean of its divisors is an integer number (25041180978).

Almost surely, 2^198041178451 is an apocalyptic number.

198041178451 is a deficient number, since it is larger than the sum of its proper divisors (2288269373).

198041178451 is a wasteful number, since it uses less digits than its factorization.

198041178451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882741.

The product of its (nonzero) digits is 322560, while the sum is 49.

The spelling of 198041178451 in words is "one hundred ninety-eight billion, forty-one million, one hundred seventy-eight thousand, four hundred fifty-one".