21849502210 has 16 divisors (see below), whose sum is σ = 39336319296. Its totient is φ = 8738197488.

The previous prime is 21849502193. The next prime is 21849502231. The reversal of 21849502210 is 1220594812.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142392 + ... + 252931.

It is an arithmetic number, because the mean of its divisors is an integer number (2458519956).

Almost surely, 2^21849502210 is an apocalyptic number.

21849502210 is a deficient number, since it is larger than the sum of its proper divisors (17486817086).

21849502210 is a wasteful number, since it uses less digits than its factorization.

21849502210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400857.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 21849502210 in words is "twenty-one billion, eight hundred forty-nine million, five hundred two thousand, two hundred ten".