197473943520 has 720 divisors, whose sum is σ = 816533071200. Its totient is φ = 44812486656.

The previous prime is 197473943503. The next prime is 197473943521. The reversal of 197473943520 is 25349374791.

197473943520 is a `hidden beast` number, since 1 + 9 + 7 + 4 + 73 + 9 + 43 + 520 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197473943521) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 94619917 + ... + 94622003.

It is an arithmetic number, because the mean of its divisors is an integer number (1134073710).

Almost surely, 2^197473943520 is an apocalyptic number.

197473943520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197473943520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (408266535600).

197473943520 is an abundant number, since it is smaller than the sum of its proper divisors (619059127680).

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

197473943520 is a wasteful number, since it uses less digits than its factorization.

197473943520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 5715360, while the sum is 54.

The spelling of 197473943520 in words is "one hundred ninety-seven billion, four hundred seventy-three million, nine hundred forty-three thousand, five hundred twenty".