194663999040 has 448 divisors, whose sum is σ = 731079917568. Its totient is φ = 42944716800.

The previous prime is 194663999021. The next prime is 194663999051. The reversal of 194663999040 is 40999366491.

194663999040 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 (448).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 96034507 + ... + 96036533.

It is an arithmetic number, because the mean of its divisors is an integer number (1631874816).

Almost surely, 2^194663999040 is an apocalyptic number.

194663999040 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 194663999040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365539958784).

194663999040 is an abundant number, since it is smaller than the sum of its proper divisors (536415918528).

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

194663999040 is a wasteful number, since it uses less digits than its factorization.

194663999040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546 (or 2536 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 60.

The spelling of 194663999040 in words is "one hundred ninety-four billion, six hundred sixty-three million, nine hundred ninety-nine thousand, forty".