194068525440 has 128 divisors (see below), whose sum is σ = 618872001120. Its totient is φ = 51728302080.

The previous prime is 194068525439. The next prime is 194068525463. The reversal of 194068525440 is 44525860491.

194068525440 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 (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 194068525440.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4473132 + ... + 4516308.

Almost surely, 2^194068525440 is an apocalyptic number.

194068525440 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 194068525440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309436000560).

194068525440 is an abundant number, since it is smaller than the sum of its proper divisors (424803475680).

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

194068525440 is a wasteful number, since it uses less digits than its factorization.

194068525440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45540 (or 45528 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 194068525440 in words is "one hundred ninety-four billion, sixty-eight million, five hundred twenty-five thousand, four hundred forty".