197012079543680 has 128 divisors (see below), whose sum is σ = 472977544010400. Its totient is φ = 78470994493440.

The previous prime is 197012079543679. The next prime is 197012079543739. The reversal of 197012079543680 is 86345970210791.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×197012079543680² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2000906291 + ... + 2001004749.

It is a 2-persistent number, because it is pandigital, and so is 2⋅197012079543680 = 394024159087360, but 3⋅197012079543680 = 591036238631040 is not.

Almost surely, 2^{197012079543680} is an apocalyptic number.

197012079543680 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 197012079543680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236488772005200).

197012079543680 is an abundant number, since it is smaller than the sum of its proper divisors (275965464466720).

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

197012079543680 is a wasteful number, since it uses less digits than its factorization.

197012079543680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111692 (or 111680 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 62.

The spelling of 197012079543680 in words is "one hundred ninety-seven trillion, twelve billion, seventy-nine million, five hundred forty-three thousand, six hundred eighty".