66644266244 has 12 divisors (see below), whose sum is σ = 116652617424. Its totient is φ = 33314946984.

The previous prime is 66644266243. The next prime is 66644266327. The reversal of 66644266244 is 44266244666.

It is a junction number, because it is equal to n+sod(n) for n = 66644266192 and 66644266201.

It is not an unprimeable number, because it can be changed into a prime (66644266243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1775642 + ... + 1812785.

It is an arithmetic number, because the mean of its divisors is an integer number (9721051452).

Almost surely, 2^66644266244 is an apocalyptic number.

It is an amenable number.

66644266244 is a deficient number, since it is larger than the sum of its proper divisors (50008351180).

66644266244 is a wasteful number, since it uses less digits than its factorization.

66644266244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3593074 (or 3593072 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 50.

The spelling of 66644266244 in words is "sixty-six billion, six hundred forty-four million, two hundred sixty-six thousand, two hundred forty-four".