1664846240446 has 16 divisors (see below), whose sum is σ = 2507049468000. Its totient is φ = 829163804128.

The previous prime is 1664846240411. The next prime is 1664846240467. The reversal of 1664846240446 is 6440426484661.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 4573980 + ... + 4924528.

It is an arithmetic number, because the mean of its divisors is an integer number (156690591750).

Almost surely, 2^{1664846240446} is an apocalyptic number.

1664846240446 is a deficient number, since it is larger than the sum of its proper divisors (842203227554).

1664846240446 is a wasteful number, since it uses less digits than its factorization.

1664846240446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359843.

The product of its (nonzero) digits is 21233664, while the sum is 55.

The spelling of 1664846240446 in words is "one trillion, six hundred sixty-four billion, eight hundred forty-six million, two hundred forty thousand, four hundred forty-six".