198261527827 has 32 divisors (see below), whose sum is σ = 226446462720. Its totient is φ = 171982673280.

The previous prime is 198261527777. The next prime is 198261527831. The reversal of 198261527827 is 728725162891.

198261527827 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 198261527827 - 2³⁵ = 163901789459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198261527857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6174049 + ... + 6206077.

It is an arithmetic number, because the mean of its divisors is an integer number (7076451960).

Almost surely, 2^198261527827 is an apocalyptic number.

198261527827 is a deficient number, since it is larger than the sum of its proper divisors (28184934893).

198261527827 is a wasteful number, since it uses less digits than its factorization.

198261527827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32371.

The product of its digits is 6773760, while the sum is 58.

The spelling of 198261527827 in words is "one hundred ninety-eight billion, two hundred sixty-one million, five hundred twenty-seven thousand, eight hundred twenty-seven".