40444424145 has 32 divisors (see below), whose sum is σ = 71951235840. Its totient is φ = 21555348480.

The previous prime is 40444424131. The next prime is 40444424149. The reversal of 40444424145 is 54142444404.

40444424145 is a `hidden beast` number, since 404 + 4 + 4 + 4 + 241 + 4 + 5 = 666.

It is not a de Polignac number, because 40444424145 - 2⁹ = 40444423633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40444424149) 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, 91825 + ... + 298865.

It is an arithmetic number, because the mean of its divisors is an integer number (2248476120).

Almost surely, 2^40444424145 is an apocalyptic number.

40444424145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40444424145 is a deficient number, since it is larger than the sum of its proper divisors (31506811695).

40444424145 is a wasteful number, since it uses less digits than its factorization.

40444424145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208502 (or 208496 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 36.

Adding to 40444424145 its reverse (54142444404), we get a palindrome (94586868549).

The spelling of 40444424145 in words is "forty billion, four hundred forty-four million, four hundred twenty-four thousand, one hundred forty-five".