198174793807980 has 144 divisors (see below), whose sum is σ = 659401494923808. Its totient is φ = 47776946688000.

The previous prime is 198174793807979. The next prime is 198174793807997. The reversal of 198174793807980 is 89708397471891.

198174793807980 is a `hidden beast` number, since 1 + 9 + 81 + 7 + 4 + 79 + 380 + 7 + 98 + 0 = 666.

It is a super-2 number, since 2×198174793807980² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198174793807980.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 276128581 + ... + 276845340.

It is an arithmetic number, because the mean of its divisors is an integer number (4579177048082).

Almost surely, 2^{198174793807980} is an apocalyptic number.

198174793807980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198174793807980 is an abundant number, since it is smaller than the sum of its proper divisors (461226701115828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198174793807980 is a wasteful number, since it uses less digits than its factorization.

198174793807980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552974128 (or 552974123 counting only the distinct ones).

The product of its (nonzero) digits is 1536288768, while the sum is 81.

The spelling of 198174793807980 in words is "one hundred ninety-eight trillion, one hundred seventy-four billion, seven hundred ninety-three million, eight hundred seven thousand, nine hundred eighty".