2064266640440 has 64 divisors (see below), whose sum is σ = 4761916024320. Its totient is φ = 804884608000.

The previous prime is 2064266640437. The next prime is 2064266640479. The reversal of 2064266640440 is 440466624602.

It is a super-2 number, since 2×2064266640440² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2064266640391 and 2064266640400.

It is a congruent 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, 1403945 + ... + 2469735.

It is an arithmetic number, because the mean of its divisors is an integer number (74404937880).

Almost surely, 2^{2064266640440} is an apocalyptic number.

2064266640440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2064266640440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2380958012160).

2064266640440 is an abundant number, since it is smaller than the sum of its proper divisors (2697649383880).

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

2064266640440 is a wasteful number, since it uses less digits than its factorization.

2064266640440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067024 (or 1067020 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 44.

The spelling of 2064266640440 in words is "two trillion, sixty-four billion, two hundred sixty-six million, six hundred forty thousand, four hundred forty".