197799728397200 has 30 divisors (see below), whose sum is σ = 475213847475234. Its totient is φ = 79119891358720.

The previous prime is 197799728397169. The next prime is 197799728397239. The reversal of 197799728397200 is 2793827997791.

It can be written as a sum of positive squares in 3 ways, for example, as 202503600016 + 197597224797184 = 450004^2 + 14056928^2 .

It is a Harshad number since it is a multiple of its sum of digits (80).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 247249660097 + ... + 247249660896.

Almost surely, 2^{197799728397200} is an apocalyptic number.

197799728397200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197799728397200 is an abundant number, since it is smaller than the sum of its proper divisors (277414119078034).

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

197799728397200 is a wasteful number, since it uses less digits than its factorization.

197799728397200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494499321011 (or 494499321000 counting only the distinct ones).

The product of its (nonzero) digits is 1512284256, while the sum is 80.

The spelling of 197799728397200 in words is "one hundred ninety-seven trillion, seven hundred ninety-nine billion, seven hundred twenty-eight million, three hundred ninety-seven thousand, two hundred".