21838586210 has 48 divisors (see below), whose sum is σ = 45674186688. Its totient is φ = 7364681280.

The previous prime is 21838586201. The next prime is 21838586239. The reversal of 21838586210 is 1268583812.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218549 + ... + 302391.

It is an arithmetic number, because the mean of its divisors is an integer number (951545556).

Almost surely, 2^21838586210 is an apocalyptic number.

21838586210 is an abundant number, since it is smaller than the sum of its proper divisors (23835600478).

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

21838586210 is an equidigital number, since it uses as much as digits as its factorization.

21838586210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83979 (or 83918 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 21838586210 in words is "twenty-one billion, eight hundred thirty-eight million, five hundred eighty-six thousand, two hundred ten".