197406720000 has 1600 divisors, whose sum is σ = 891809717040. Its totient is φ = 42467328000.

The previous prime is 197406719999. The next prime is 197406720029. The reversal of 197406720000 is 27604791.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1600).

It is a super-3 number, since 3×197406720000³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 11612159992 + ... + 11612160008.

Almost surely, 2^197406720000 is an apocalyptic number.

197406720000 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 197406720000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (445904858520).

197406720000 is an abundant number, since it is smaller than the sum of its proper divisors (694402997040).

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

197406720000 is an frugal number, since it uses more digits than its factorization.

197406720000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 197406720000 in words is "one hundred ninety-seven billion, four hundred six million, seven hundred twenty thousand".