1866678912023 has 2 divisors, whose sum is σ = 1866678912024. Its totient is φ = 1866678912022.

The previous prime is 1866678911989. The next prime is 1866678912047. The reversal of 1866678912023 is 3202198766681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1866678912023 - 2²⁰ = 1866677863447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1866678912053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 933339456011 + 933339456012.

It is an arithmetic number, because the mean of its divisors is an integer number (933339456012).

Almost surely, 2^{1866678912023} is an apocalyptic number.

1866678912023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1866678912023 is an equidigital number, since it uses as much as digits as its factorization.

1866678912023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10450944, while the sum is 59.

The spelling of 1866678912023 in words is "one trillion, eight hundred sixty-six billion, six hundred seventy-eight million, nine hundred twelve thousand, twenty-three".