226821632851 has 4 divisors (see below), whose sum is σ = 247441781304. Its totient is φ = 206201484400.

The previous prime is 226821632839. The next prime is 226821632857. The reversal of 226821632851 is 158236128622.

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 226821632851 - 2⁹ = 226821632339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (226821632857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10310074210 + ... + 10310074231.

It is an arithmetic number, because the mean of its divisors is an integer number (61860445326).

Almost surely, 2^226821632851 is an apocalyptic number.

226821632851 is a deficient number, since it is larger than the sum of its proper divisors (20620148453).

226821632851 is a wasteful number, since it uses less digits than its factorization.

226821632851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20620148452.

The product of its digits is 552960, while the sum is 46.

The spelling of 226821632851 in words is "two hundred twenty-six billion, eight hundred twenty-one million, six hundred thirty-two thousand, eight hundred fifty-one".