197486640000 has 960 divisors, whose sum is σ = 790135513200. Its totient is φ = 48522240000.

The previous prime is 197486639983. The next prime is 197486640041. The reversal of 197486640000 is 46684791.

It is a tau number, because it is divible by the number of its divisors (960).

It is a super-3 number, since 3×197486640000³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 119 ways as a sum of consecutive naturals, for example, 365039730 + ... + 365040270.

Almost surely, 2^197486640000 is an apocalyptic number.

197486640000 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 197486640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395067756600).

197486640000 is an abundant number, since it is smaller than the sum of its proper divisors (592648873200).

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

197486640000 is an equidigital number, since it uses as much as digits as its factorization.

197486640000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 197486640000 in words is "one hundred ninety-seven billion, four hundred eighty-six million, six hundred forty thousand".