2133851863999 has 4 divisors (see below), whose sum is σ = 2135412839664. Its totient is φ = 2132290888336.

The previous prime is 2133851863993. The next prime is 2133851864021. The reversal of 2133851863999 is 9993681583312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2133851863999 - 2⁹ = 2133851863487 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2133851863993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 780485782 + ... + 780488515.

It is an arithmetic number, because the mean of its divisors is an integer number (533853209916).

Almost surely, 2^{2133851863999} is an apocalyptic number.

2133851863999 is a deficient number, since it is larger than the sum of its proper divisors (1560975665).

2133851863999 is a wasteful number, since it uses less digits than its factorization.

2133851863999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560975664.

The product of its digits is 75582720, while the sum is 67.

The spelling of 2133851863999 in words is "two trillion, one hundred thirty-three billion, eight hundred fifty-one million, eight hundred sixty-three thousand, nine hundred ninety-nine".