16191194423040 has 1728 divisors, whose sum is σ = 71444530483200. Its totient is φ = 3399817494528.

The previous prime is 16191194423023. The next prime is 16191194423071. The reversal of 16191194423040 is 4032449119161.

It is a happy number.

16191194423040 is a `hidden beast` number, since 1 + 6 + 191 + 19 + 442 + 3 + 0 + 4 + 0 = 666.

16191194423040 is digitally balanced in base 2, 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 (1728).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 9771389892 + ... + 9771391548.

It is an arithmetic number, because the mean of its divisors is an integer number (41345214400).

Almost surely, 2^{16191194423040} is an apocalyptic number.

16191194423040 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 16191194423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35722265241600).

16191194423040 is an abundant number, since it is smaller than the sum of its proper divisors (55253336060160).

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

16191194423040 is a wasteful number, since it uses less digits than its factorization.

16191194423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959 (or 1926 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 16191194423040 in words is "sixteen trillion, one hundred ninety-one billion, one hundred ninety-four million, four hundred twenty-three thousand, forty".