21110245824808 has 32 divisors (see below), whose sum is σ = 46695474639360. Its totient is φ = 8755401493440.

The previous prime is 21110245824803. The next prime is 21110245824827. The reversal of 21110245824808 is 80842854201112.

It is not an unprimeable number, because it can be changed into a prime (21110245824803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6080138191 + ... + 6080141662.

It is an arithmetic number, because the mean of its divisors is an integer number (1459233582480).

Almost surely, 2^{21110245824808} is an apocalyptic number.

21110245824808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21110245824808 is an abundant number, since it is smaller than the sum of its proper divisors (25585228814552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21110245824808 is a wasteful number, since it uses less digits than its factorization.

21110245824808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12160279897 (or 12160279893 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 46.

The spelling of 21110245824808 in words is "twenty-one trillion, one hundred ten billion, two hundred forty-five million, eight hundred twenty-four thousand, eight hundred eight".