40045320445 has 32 divisors (see below), whose sum is σ = 54813265920. Its totient is φ = 27823150080.

The previous prime is 40045320437. The next prime is 40045320481. The reversal of 40045320445 is 54402354004.

It is not a de Polignac number, because 40045320445 - 2³ = 40045320437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6382660 + ... + 6388930.

It is an arithmetic number, because the mean of its divisors is an integer number (1712914560).

Almost surely, 2^40045320445 is an apocalyptic number.

It is an amenable number.

40045320445 is a deficient number, since it is larger than the sum of its proper divisors (14767945475).

40045320445 is a wasteful number, since it uses less digits than its factorization.

40045320445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12085.

The product of its (nonzero) digits is 38400, while the sum is 31.

Adding to 40045320445 its reverse (54402354004), we get a palindrome (94447674449).

The spelling of 40045320445 in words is "forty billion, forty-five million, three hundred twenty thousand, four hundred forty-five".