198277054417 has 32 divisors (see below), whose sum is σ = 226514534400. Its totient is φ = 172048131648.

The previous prime is 198277054411. The next prime is 198277054421. The reversal of 198277054417 is 714450772891.

It is a cyclic number.

It is not a de Polignac number, because 198277054417 - 2⁷ = 198277054289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198277054411) 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 31 ways as a sum of consecutive naturals, for example, 25034184 + ... + 25042102.

It is an arithmetic number, because the mean of its divisors is an integer number (7078579200).

Almost surely, 2^198277054417 is an apocalyptic number.

It is an amenable number.

198277054417 is a deficient number, since it is larger than the sum of its proper divisors (28237479983).

198277054417 is a wasteful number, since it uses less digits than its factorization.

198277054417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8725.

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 198277054417 in words is "one hundred ninety-eight billion, two hundred seventy-seven million, fifty-four thousand, four hundred seventeen".