2108924917823 has 4 divisors (see below), whose sum is σ = 2120576436888. Its totient is φ = 2097273398760.

The previous prime is 2108924917817. The next prime is 2108924917927. The reversal of 2108924917823 is 3287194298012.

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 2108924917823 - 2¹² = 2108924913727 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 (2108924917523) 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 in 3 ways as a sum of consecutive naturals, for example, 5825759261 + ... + 5825759622.

It is an arithmetic number, because the mean of its divisors is an integer number (530144109222).

Almost surely, 2^{2108924917823} is an apocalyptic number.

2108924917823 is a deficient number, since it is larger than the sum of its proper divisors (11651519065).

2108924917823 is a wasteful number, since it uses less digits than its factorization.

2108924917823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11651519064.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 2108924917823 in words is "two trillion, one hundred eight billion, nine hundred twenty-four million, nine hundred seventeen thousand, eight hundred twenty-three".