4161156545442 has 64 divisors (see below), whose sum is σ = 9034800445440. Its totient is φ = 1270034376000.

The previous prime is 4161156545341. The next prime is 4161156545443. The reversal of 4161156545442 is 2445456511614.

4161156545442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 4161156545391 and 4161156545400.

It is not an unprimeable number, because it can be changed into a prime (4161156545443) 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, 23935909 + ... + 24109127.

It is an arithmetic number, because the mean of its divisors is an integer number (141168756960).

Almost surely, 2^{4161156545442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4161156545442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4517400222720).

4161156545442 is an abundant number, since it is smaller than the sum of its proper divisors (4873643899998).

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

4161156545442 is a wasteful number, since it uses less digits than its factorization.

4161156545442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175719.

The product of its digits is 2304000, while the sum is 48.

The spelling of 4161156545442 in words is "four trillion, one hundred sixty-one billion, one hundred fifty-six million, five hundred forty-five thousand, four hundred forty-two".