197840681086240 has 96 divisors (see below), whose sum is σ = 516409716574080. Its totient is φ = 71242884624384.

The previous prime is 197840681086219. The next prime is 197840681086277. The reversal of 197840681086240 is 42680186048791.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1581144930 + ... + 1581270049.

It is an arithmetic number, because the mean of its divisors is an integer number (5379267880980).

Almost surely, 2^{197840681086240} is an apocalyptic number.

197840681086240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197840681086240 is an abundant number, since it is smaller than the sum of its proper divisors (318569035487840).

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

197840681086240 is a wasteful number, since it uses less digits than its factorization.

197840681086240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3162415034 (or 3162415026 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 64.

The spelling of 197840681086240 in words is "one hundred ninety-seven trillion, eight hundred forty billion, six hundred eighty-one million, eighty-six thousand, two hundred forty".