2141110605666 has 16 divisors (see below), whose sum is σ = 4282248233088. Its totient is φ = 713699031600.

The previous prime is 2141110605631. The next prime is 2141110605671. The reversal of 2141110605666 is 6665060111412.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10890 + ... + 2069381.

It is an arithmetic number, because the mean of its divisors is an integer number (267640514568).

Almost surely, 2^{2141110605666} is an apocalyptic number.

2141110605666 is an abundant number, since it is smaller than the sum of its proper divisors (2141137627422).

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

2141110605666 is a wasteful number, since it uses less digits than its factorization.

2141110605666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251817.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 2141110605666 in words is "two trillion, one hundred forty-one billion, one hundred ten million, six hundred five thousand, six hundred sixty-six".