145000043444 has 6 divisors (see below), whose sum is σ = 253750076034. Its totient is φ = 72500021720.

The previous prime is 145000043431. The next prime is 145000043449. The reversal of 145000043444 is 444340000541.

It can be written as a sum of positive squares in only one way, i.e., 144688944400 + 311099044 = 380380^2 + 17638^2 .

It is a super-2 number, since 2×145000043444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145000043449) by changing a digit.

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 as a sum of consecutive naturals, namely, 18125005427 + ... + 18125005434.

It is an arithmetic number, because the mean of its divisors is an integer number (42291679339).

Almost surely, 2^145000043444 is an apocalyptic number.

It is an amenable number.

145000043444 is a deficient number, since it is larger than the sum of its proper divisors (108750032590).

145000043444 is a wasteful number, since it uses less digits than its factorization.

145000043444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36250010865 (or 36250010863 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 145000043444 its reverse (444340000541), we get a palindrome (589340043985).

The spelling of 145000043444 in words is "one hundred forty-five billion, forty-three thousand, four hundred forty-four".