2666149450266 has 16 divisors (see below), whose sum is σ = 5374285507584. Its totient is φ = 881718715584.

The previous prime is 2666149450243. The next prime is 2666149450331. The reversal of 2666149450266 is 6620549416662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1749441135 + ... + 1749442658.

It is an arithmetic number, because the mean of its divisors is an integer number (335892844224).

Almost surely, 2^{2666149450266} is an apocalyptic number.

2666149450266 is an abundant number, since it is smaller than the sum of its proper divisors (2708136057318).

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

2666149450266 is a wasteful number, since it uses less digits than its factorization.

2666149450266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3498883925.

The product of its (nonzero) digits is 22394880, while the sum is 57.

The spelling of 2666149450266 in words is "two trillion, six hundred sixty-six billion, one hundred forty-nine million, four hundred fifty thousand, two hundred sixty-six".