40321144168 has 8 divisors (see below), whose sum is σ = 75602145330. Its totient is φ = 20160572080.

The previous prime is 40321144163. The next prime is 40321144183. The reversal of 40321144168 is 86144112304.

40321144168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 39896866564 + 424277604 = 199742^2 + 20598^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40321144163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2520071503 + ... + 2520071518.

Almost surely, 2^40321144168 is an apocalyptic number.

It is an amenable number.

40321144168 is a deficient number, since it is larger than the sum of its proper divisors (35281001162).

40321144168 is a wasteful number, since it uses less digits than its factorization.

40321144168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5040143027 (or 5040143023 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The spelling of 40321144168 in words is "forty billion, three hundred twenty-one million, one hundred forty-four thousand, one hundred sixty-eight".