440421651066 has 16 divisors (see below), whose sum is σ = 893249546688. Its totient is φ = 144739509600.

The previous prime is 440421651041. The next prime is 440421651067. The reversal of 440421651066 is 660156124044.

It is not an unprimeable number, because it can be changed into a prime (440421651067) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 516926395 + ... + 516927246.

It is an arithmetic number, because the mean of its divisors is an integer number (55828096668).

Almost surely, 2^440421651066 is an apocalyptic number.

440421651066 is an abundant number, since it is smaller than the sum of its proper divisors (452827895622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

440421651066 is a wasteful number, since it uses less digits than its factorization.

440421651066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033853717.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 440421651066 in words is "four hundred forty billion, four hundred twenty-one million, six hundred fifty-one thousand, sixty-six".