194979448320 has 80 divisors (see below), whose sum is σ = 623324948400. Its totient is φ = 51994517504.

The previous prime is 194979448297. The next prime is 194979448333. The reversal of 194979448320 is 23844979491.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12686295 + ... + 12701654.

It is an arithmetic number, because the mean of its divisors is an integer number (7791561855).

Almost surely, 2^194979448320 is an apocalyptic number.

194979448320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194979448320 is an abundant number, since it is smaller than the sum of its proper divisors (428345500080).

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

194979448320 is an equidigital number, since it uses as much as digits as its factorization.

194979448320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25387975 (or 25387959 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 60.

The spelling of 194979448320 in words is "one hundred ninety-four billion, nine hundred seventy-nine million, four hundred forty-eight thousand, three hundred twenty".