194686661120 has 320 divisors, whose sum is σ = 558324264960. Its totient is φ = 63658180608.

The previous prime is 194686661101. The next prime is 194686661131. The reversal of 194686661120 is 21166686491.

194686661120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (320).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232045661 + ... + 232046499.

It is an arithmetic number, because the mean of its divisors is an integer number (1744763328).

Almost surely, 2^194686661120 is an apocalyptic number.

194686661120 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 194686661120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279162132480).

194686661120 is an abundant number, since it is smaller than the sum of its proper divisors (363637603840).

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

194686661120 is an equidigital number, since it uses as much as digits as its factorization.

194686661120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 194686661120 in words is "one hundred ninety-four billion, six hundred eighty-six million, six hundred sixty-one thousand, one hundred twenty".