397818363980196 has 72 divisors (see below), whose sum is σ = 1042902021601440. Its totient is φ = 132598327819392.

The previous prime is 397818363980189. The next prime is 397818363980197. The reversal of 397818363980196 is 691089363818793.

397818363980196 is a `hidden beast` number, since 3 + 9 + 7 + 8 + 1 + 8 + 36 + 398 + 0 + 196 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (397818363980197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4531740 + ... + 28568748.

It is an arithmetic number, because the mean of its divisors is an integer number (14484750300020).

Almost surely, 2^{397818363980196} is an apocalyptic number.

397818363980196 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

397818363980196 is an abundant number, since it is smaller than the sum of its proper divisors (645083657621244).

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

397818363980196 is a wasteful number, since it uses less digits than its factorization.

397818363980196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24054055 (or 24054041 counting only the distinct ones).

The product of its (nonzero) digits is 2539579392, while the sum is 81.

The spelling of 397818363980196 in words is "three hundred ninety-seven trillion, eight hundred eighteen billion, three hundred sixty-three million, nine hundred eighty thousand, one hundred ninety-six".