198534390354240 has 112 divisors (see below), whose sum is σ = 630351404450880. Its totient is φ = 52942108078080.

The previous prime is 198534390354217. The next prime is 198534390354329. The reversal of 198534390354240 is 42453093435891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 141198996 + ... + 142598124.

It is an arithmetic number, because the mean of its divisors is an integer number (5628137539740).

Almost surely, 2^{198534390354240} is an apocalyptic number.

198534390354240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198534390354240 is an abundant number, since it is smaller than the sum of its proper divisors (431817014096640).

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

198534390354240 is a wasteful number, since it uses less digits than its factorization.

198534390354240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546960 (or 1546950 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 60.

The spelling of 198534390354240 in words is "one hundred ninety-eight trillion, five hundred thirty-four billion, three hundred ninety million, three hundred fifty-four thousand, two hundred forty".