20066064406644 has 24 divisors (see below), whose sum is σ = 46832881169088. Its totient is φ = 6686964675520.

The previous prime is 20066064406643. The next prime is 20066064406679. The reversal of 20066064406644 is 44660446066002.

It is a junction number, because it is equal to n+sod(n) for n = 20066064406593 and 20066064406602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20066064406643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215383992 + ... + 215477135.

It is an arithmetic number, because the mean of its divisors is an integer number (1951370048712).

Almost surely, 2^{20066064406644} is an apocalyptic number.

It is an amenable number.

20066064406644 is an abundant number, since it is smaller than the sum of its proper divisors (26766816762444).

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

20066064406644 is a wasteful number, since it uses less digits than its factorization.

20066064406644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430865015 (or 430865013 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 20066064406644 in words is "twenty trillion, sixty-six billion, sixty-four million, four hundred six thousand, six hundred forty-four".