40644454570 has 8 divisors (see below), whose sum is σ = 73160018244. Its totient is φ = 16257781824.

The previous prime is 40644454541. The next prime is 40644454589. The reversal of 40644454570 is 7545444604.

It can be written as a sum of positive squares in 2 ways, for example, as 37606129929 + 3038324641 = 193923^2 + 55121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 2032222719 + ... + 2032222738.

Almost surely, 2^40644454570 is an apocalyptic number.

40644454570 is a deficient number, since it is larger than the sum of its proper divisors (32515563674).

40644454570 is a wasteful number, since it uses less digits than its factorization.

40644454570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4064445464.

The product of its (nonzero) digits is 1075200, while the sum is 43.

The spelling of 40644454570 in words is "forty billion, six hundred forty-four million, four hundred fifty-four thousand, five hundred seventy".