2123366399999 has 16 divisors (see below), whose sum is σ = 2297446139520. Its totient is φ = 1950836037120.

The previous prime is 2123366399983. The next prime is 2123366400041. The reversal of 2123366399999 is 9999936633212.

It is a cyclic number.

It is not a de Polignac number, because 2123366399999 - 2⁴ = 2123366399983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123366399299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3210167 + ... + 3814695.

It is an arithmetic number, because the mean of its divisors is an integer number (143590383720).

Almost surely, 2^{2123366399999} is an apocalyptic number.

2123366399999 is a deficient number, since it is larger than the sum of its proper divisors (174079739521).

2123366399999 is a wasteful number, since it uses less digits than its factorization.

2123366399999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605810.

The product of its digits is 229582512, while the sum is 71.

The spelling of 2123366399999 in words is "two trillion, one hundred twenty-three billion, three hundred sixty-six million, three hundred ninety-nine thousand, nine hundred ninety-nine".