194244391428864 has 288 divisors, whose sum is σ = 601197789502464. Its totient is φ = 54529986723840.

The previous prime is 194244391428863. The next prime is 194244391428881. The reversal of 194244391428864 is 468824193442491.

It is not an unprimeable number, because it can be changed into a prime (194244391428863) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102272844 + ... + 104154804.

Almost surely, 2^{194244391428864} is an apocalyptic number.

194244391428864 is a gapful number since it is divisible by the number (14) 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 194244391428864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300598894751232).

194244391428864 is an abundant number, since it is smaller than the sum of its proper divisors (406953398073600).

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

194244391428864 is a wasteful number, since it uses less digits than its factorization.

194244391428864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882323 (or 1882309 counting only the distinct ones).

The product of its digits is 382205952, while the sum is 69.

The spelling of 194244391428864 in words is "one hundred ninety-four trillion, two hundred forty-four billion, three hundred ninety-one million, four hundred twenty-eight thousand, eight hundred sixty-four".