2066426232644 has 6 divisors (see below), whose sum is σ = 3616245907134. Its totient is φ = 1033213116320.

The previous prime is 2066426232613. The next prime is 2066426232667. The reversal of 2066426232644 is 4462326246602.

It can be written as a sum of positive squares in only one way, i.e., 1473218192644 + 593208040000 = 1213762^2 + 770200^2 .

It is a super-2 number, since 2×2066426232644² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 258303279077 + ... + 258303279084.

It is an arithmetic number, because the mean of its divisors is an integer number (602707651189).

Almost surely, 2^{2066426232644} is an apocalyptic number.

It is an amenable number.

2066426232644 is a deficient number, since it is larger than the sum of its proper divisors (1549819674490).

2066426232644 is a wasteful number, since it uses less digits than its factorization.

2066426232644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516606558165 (or 516606558163 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 47.

The spelling of 2066426232644 in words is "two trillion, sixty-six billion, four hundred twenty-six million, two hundred thirty-two thousand, six hundred forty-four".