2040666040066 has 8 divisors (see below), whose sum is σ = 3143728764540. Its totient is φ = 992756451888.

The previous prime is 2040666040037. The next prime is 2040666040069. The reversal of 2040666040066 is 6600406660402.

It can be written as a sum of positive squares in 2 ways, for example, as 1930212841041 + 110453199025 = 1389321^2 + 332345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2040666040069) 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, 13788283981 + ... + 13788284128.

Almost surely, 2^{2040666040066} is an apocalyptic number.

2040666040066 is a deficient number, since it is larger than the sum of its proper divisors (1103062724474).

2040666040066 is a wasteful number, since it uses less digits than its factorization.

2040666040066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27576568148.

The product of its (nonzero) digits is 248832, while the sum is 40.

The spelling of 2040666040066 in words is "two trillion, forty billion, six hundred sixty-six million, forty thousand, sixty-six".