198023277550 has 48 divisors (see below), whose sum is σ = 421218433152. Its totient is φ = 67848933600.

The previous prime is 198023277527. The next prime is 198023277577. The reversal of 198023277550 is 55772320891.

It is a junction number, because it is equal to n+sod(n) for n = 198023277494 and 198023277503.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 347305 + ... + 718795.

It is an arithmetic number, because the mean of its divisors is an integer number (8775384024).

Almost surely, 2^198023277550 is an apocalyptic number.

198023277550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198023277550 is an abundant number, since it is smaller than the sum of its proper divisors (223195155602).

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

198023277550 is a wasteful number, since it uses less digits than its factorization.

198023277550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373033 (or 373028 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The spelling of 198023277550 in words is "one hundred ninety-eight billion, twenty-three million, two hundred seventy-seven thousand, five hundred fifty".