2111666612 has 48 divisors (see below), whose sum is σ = 4255903680. Its totient is φ = 909200160.

The previous prime is 2111666573. The next prime is 2111666621. The reversal of 2111666612 is 2166661112.

It is a congruent number.

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, 298298 + ... + 305294.

It is an arithmetic number, because the mean of its divisors is an integer number (88664660).

Almost surely, 2^2111666612 is an apocalyptic number.

2111666612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2111666612 is an abundant number, since it is smaller than the sum of its proper divisors (2144237068).

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

2111666612 is a wasteful number, since it uses less digits than its factorization.

2111666612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7069 (or 7029 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 2111666612 is about 45952.8738165525. The cubic root of 2111666612 is about 1282.9462187580.

The spelling of 2111666612 in words is "two billion, one hundred eleven million, six hundred sixty-six thousand, six hundred twelve".