198620449229643 has 128 divisors (see below), whose sum is σ = 318128069683200. Its totient is φ = 110115082506240.

The previous prime is 198620449229641. The next prime is 198620449229669. The reversal of 198620449229643 is 346922944026891.

198620449229643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 198620449229643 - 2¹ = 198620449229641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198620449229641) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6111946371 + ... + 6111978867.

It is an arithmetic number, because the mean of its divisors is an integer number (2485375544400).

Almost surely, 2^{198620449229643} is an apocalyptic number.

198620449229643 is a deficient number, since it is larger than the sum of its proper divisors (119507620453557).

198620449229643 is a wasteful number, since it uses less digits than its factorization.

198620449229643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33362 (or 33348 counting only the distinct ones).

The product of its (nonzero) digits is 322486272, while the sum is 69.

The spelling of 198620449229643 in words is "one hundred ninety-eight trillion, six hundred twenty billion, four hundred forty-nine million, two hundred twenty-nine thousand, six hundred forty-three".