21834208875 has 16 divisors (see below), whose sum is σ = 36332124192. Its totient is φ = 11644911200.

The previous prime is 21834208873. The next prime is 21834208919. The reversal of 21834208875 is 57880243812.

It is not a de Polignac number, because 21834208875 - 2¹ = 21834208873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21834208873) 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 15 ways as a sum of consecutive naturals, for example, 29111904 + ... + 29112653.

It is an arithmetic number, because the mean of its divisors is an integer number (2270757762).

Almost surely, 2^21834208875 is an apocalyptic number.

21834208875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21834208875 is a deficient number, since it is larger than the sum of its proper divisors (14497915317).

21834208875 is an equidigital number, since it uses as much as digits as its factorization.

21834208875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58224575 (or 58224565 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 21834208875 in words is "twenty-one billion, eight hundred thirty-four million, two hundred eight thousand, eight hundred seventy-five".