440001224665666 has 32 divisors (see below), whose sum is σ = 712450758585600. Its totient is φ = 203177551093440.

The previous prime is 440001224665649. The next prime is 440001224665697. The reversal of 440001224665666 is 666566422100044.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202526571 + ... + 204687601.

It is an arithmetic number, because the mean of its divisors is an integer number (22264086205800).

Almost surely, 2^{440001224665666} is an apocalyptic number.

440001224665666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

440001224665666 is a deficient number, since it is larger than the sum of its proper divisors (272449533919934).

440001224665666 is a wasteful number, since it uses less digits than its factorization.

440001224665666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313714.

The product of its (nonzero) digits is 9953280, while the sum is 52.

The spelling of 440001224665666 in words is "four hundred forty trillion, one billion, two hundred twenty-four million, six hundred sixty-five thousand, six hundred sixty-six".