196954780538880 has 5376 divisors, whose sum is σ = 913757828256000. Its totient is φ = 40452677959680.

The previous prime is 196954780538843. The next prime is 196954780538897. The reversal of 196954780538880 is 88835087459691.

196954780538880 is a `hidden beast` number, since 1 + 9 + 6 + 9 + 5 + 4 + 78 + 0 + 538 + 8 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (5376).

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 196954780538880.

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 447 ways as a sum of consecutive naturals, for example, 2030461654992 + ... + 2030461655088.

It is an arithmetic number, because the mean of its divisors is an integer number (169969834125).

Almost surely, 2^{196954780538880} is an apocalyptic number.

196954780538880 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 196954780538880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456878914128000).

196954780538880 is an abundant number, since it is smaller than the sum of its proper divisors (716803047717120).

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

196954780538880 is an frugal number, since it uses more digits than its factorization.

196954780538880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 4180377600, while the sum is 81.

The spelling of 196954780538880 in words is "one hundred ninety-six trillion, nine hundred fifty-four billion, seven hundred eighty million, five hundred thirty-eight thousand, eight hundred eighty".