2066126656 has 28 divisors (see below), whose sum is σ = 4472696160. Its totient is φ = 939148160.

The previous prime is 2066126617. The next prime is 2066126659. The reversal of 2066126656 is 6566216602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066126659) 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, 1466716 + ... + 1468123.

Almost surely, 2^2066126656 is an apocalyptic number.

It is an amenable number.

2066126656 is an abundant number, since it is smaller than the sum of its proper divisors (2406569504).

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

2066126656 is a wasteful number, since it uses less digits than its factorization.

2066126656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2934862 (or 2934852 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 2066126656 is about 45454.6659431130. The cubic root of 2066126656 is about 1273.6564919640.

The spelling of 2066126656 in words is "two billion, sixty-six million, one hundred twenty-six thousand, six hundred fifty-six".