194983123680 has 144 divisors (see below), whose sum is σ = 665539580160. Its totient is φ = 51983023104.

The previous prime is 194983123679. The next prime is 194983123693. The reversal of 194983123680 is 86321389491.

194983123680 is a `hidden beast` number, since 19 + 498 + 31 + 2 + 36 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7055169 + ... + 7082751.

It is an arithmetic number, because the mean of its divisors is an integer number (4621802640).

Almost surely, 2^194983123680 is an apocalyptic number.

194983123680 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 194983123680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332769790080).

194983123680 is an abundant number, since it is smaller than the sum of its proper divisors (470556456480).

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

194983123680 is a wasteful number, since it uses less digits than its factorization.

194983123680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32513 (or 32502 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 54.

The spelling of 194983123680 in words is "one hundred ninety-four billion, nine hundred eighty-three million, one hundred twenty-three thousand, six hundred eighty".