2044466646640 has 80 divisors (see below), whose sum is σ = 5490540948960. Its totient is φ = 699710504960.

The previous prime is 2044466646637. The next prime is 2044466646641. The reversal of 2044466646640 is 466466644402.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2044466646641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68316145 + ... + 68346064.

It is an arithmetic number, because the mean of its divisors is an integer number (68631761862).

Almost surely, 2^{2044466646640} is an apocalyptic number.

2044466646640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044466646640 is an abundant number, since it is smaller than the sum of its proper divisors (3446074302320).

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

2044466646640 is a wasteful number, since it uses less digits than its factorization.

2044466646640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136662250 (or 136662244 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 52.

The spelling of 2044466646640 in words is "two trillion, forty-four billion, four hundred sixty-six million, six hundred forty-six thousand, six hundred forty".