21838052435 has 4 divisors (see below), whose sum is σ = 26205662928. Its totient is φ = 17470441944.

The previous prime is 21838052407. The next prime is 21838052437. The reversal of 21838052435 is 53425083812.

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 21838052435 - 2⁶ = 21838052371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21838052392 and 21838052401.

It is not an unprimeable number, because it can be changed into a prime (21838052437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2183805239 + ... + 2183805248.

It is an arithmetic number, because the mean of its divisors is an integer number (6551415732).

Almost surely, 2^21838052435 is an apocalyptic number.

21838052435 is a deficient number, since it is larger than the sum of its proper divisors (4367610493).

21838052435 is an equidigital number, since it uses as much as digits as its factorization.

21838052435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4367610492.

The product of its (nonzero) digits is 230400, while the sum is 41.

The spelling of 21838052435 in words is "twenty-one billion, eight hundred thirty-eight million, fifty-two thousand, four hundred thirty-five".