1866040606111 has 12 divisors (see below), whose sum is σ = 2051144937072. Its totient is φ = 1696365440000.

The previous prime is 1866040606069. The next prime is 1866040606301. The reversal of 1866040606111 is 1116060406681.

It is not a de Polignac number, because 1866040606111 - 2¹¹ = 1866040604063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1866040600111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7051551 + ... + 7311391.

It is an arithmetic number, because the mean of its divisors is an integer number (170928744756).

Almost surely, 2^{1866040606111} is an apocalyptic number.

1866040606111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1866040606111 is a deficient number, since it is larger than the sum of its proper divisors (185104330961).

1866040606111 is a wasteful number, since it uses less digits than its factorization.

1866040606111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319214 (or 319203 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 1866040606111 in words is "one trillion, eight hundred sixty-six billion, forty million, six hundred six thousand, one hundred eleven".