2666354656 has 48 divisors (see below), whose sum is σ = 6206185440. Its totient is φ = 1103316480.

The previous prime is 2666354641. The next prime is 2666354657. The reversal of 2666354656 is 6564536662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2666354657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198735 + ... + 211726.

It is an arithmetic number, because the mean of its divisors is an integer number (129295530).

Almost surely, 2^2666354656 is an apocalyptic number.

It is an amenable number.

2666354656 is an abundant number, since it is smaller than the sum of its proper divisors (3539830784).

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

2666354656 is a wasteful number, since it uses less digits than its factorization.

2666354656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410507 (or 410499 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 49.

The square root of 2666354656 is about 51636.7568307693. The cubic root of 2666354656 is about 1386.6684625634.

The spelling of 2666354656 in words is "two billion, six hundred sixty-six million, three hundred fifty-four thousand, six hundred fifty-six".