197678810880 has 576 divisors, whose sum is σ = 738194688000. Its totient is φ = 50018992128.

The previous prime is 197678810863. The next prime is 197678810881. The reversal of 197678810880 is 88018876791.

It is a tau number, because it is divible by the number of its divisors (576).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197678810881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59130489 + ... + 59133831.

It is an arithmetic number, because the mean of its divisors is an integer number (1281588000).

Almost surely, 2^197678810880 is an apocalyptic number.

197678810880 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 197678810880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369097344000).

197678810880 is an abundant number, since it is smaller than the sum of its proper divisors (540515877120).

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

197678810880 is a wasteful number, since it uses less digits than its factorization.

197678810880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3461 (or 3441 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 63.

The spelling of 197678810880 in words is "one hundred ninety-seven billion, six hundred seventy-eight million, eight hundred ten thousand, eight hundred eighty".