198057121260 has 24 divisors (see below), whose sum is σ = 554559939696. Its totient is φ = 52815232320.

The previous prime is 198057121237. The next prime is 198057121261. The reversal of 198057121260 is 62121750891.

It is not an unprimeable number, because it can be changed into a prime (198057121261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1650475951 + ... + 1650476070.

It is an arithmetic number, because the mean of its divisors is an integer number (23106664154).

Almost surely, 2^198057121260 is an apocalyptic number.

198057121260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198057121260 is an abundant number, since it is smaller than the sum of its proper divisors (356502818436).

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

198057121260 is a wasteful number, since it uses less digits than its factorization.

198057121260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300952033 (or 3300952031 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 42.

The spelling of 198057121260 in words is "one hundred ninety-eight billion, fifty-seven million, one hundred twenty-one thousand, two hundred sixty".