19544666106042 has 192 divisors, whose sum is σ = 55134271658880. Its totient is φ = 5074916716800.

The previous prime is 19544666106023. The next prime is 19544666106187. The reversal of 19544666106042 is 24060166644591.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 19544666106042.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 92480638 + ... + 92691734.

It is an arithmetic number, because the mean of its divisors is an integer number (287157664890).

Almost surely, 2^{19544666106042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19544666106042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27567135829440).

19544666106042 is an abundant number, since it is smaller than the sum of its proper divisors (35589605552838).

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

19544666106042 is a wasteful number, since it uses less digits than its factorization.

19544666106042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214314 (or 214301 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 19544666106042 in words is "nineteen trillion, five hundred forty-four billion, six hundred sixty-six million, one hundred six thousand, forty-two".