40321559945 has 16 divisors (see below), whose sum is σ = 49573254528. Its totient is φ = 31475028480.

The previous prime is 40321559917. The next prime is 40321559959. The reversal of 40321559945 is 54995512304.

It is not a de Polignac number, because 40321559945 - 2⁶ = 40321559881 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40321559945.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 551039 + ... + 619908.

It is an arithmetic number, because the mean of its divisors is an integer number (3098328408).

Almost surely, 2^40321559945 is an apocalyptic number.

It is an amenable number.

40321559945 is a deficient number, since it is larger than the sum of its proper divisors (9251694583).

40321559945 is a wasteful number, since it uses less digits than its factorization.

40321559945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171120.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 40321559945 in words is "forty billion, three hundred twenty-one million, five hundred fifty-nine thousand, nine hundred forty-five".