2119701666 has 32 divisors (see below), whose sum is σ = 4431283200. Its totient is φ = 674692304.

The previous prime is 2119701659. The next prime is 2119701691. The reversal of 2119701666 is 6661079112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69841 + ... + 95483.

It is an arithmetic number, because the mean of its divisors is an integer number (138477600).

Almost surely, 2^2119701666 is an apocalyptic number.

2119701666 is an abundant number, since it is smaller than the sum of its proper divisors (2311581534).

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

2119701666 is a wasteful number, since it uses less digits than its factorization.

2119701666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26270.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 2119701666 is about 46040.2179186850. The cubic root of 2119701666 is about 1284.5713955616.

The spelling of 2119701666 in words is "two billion, one hundred nineteen million, seven hundred one thousand, six hundred sixty-six".