198327432144 has 40 divisors (see below), whose sum is σ = 512398146880. Its totient is φ = 66102398208.

The previous prime is 198327432143. The next prime is 198327432151. The reversal of 198327432144 is 441234723891.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 198327432093 and 198327432102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198327432143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276084 + ... + 687660.

It is an arithmetic number, because the mean of its divisors is an integer number (12809953672).

Almost surely, 2^198327432144 is an apocalyptic number.

It is an amenable number.

198327432144 is an abundant number, since it is smaller than the sum of its proper divisors (314070714736).

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

198327432144 is a wasteful number, since it uses less digits than its factorization.

198327432144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421627 (or 421621 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The spelling of 198327432144 in words is "one hundred ninety-eight billion, three hundred twenty-seven million, four hundred thirty-two thousand, one hundred forty-four".