20871813226 has 8 divisors (see below), whose sum is σ = 34153876224. Its totient is φ = 9487187820.

The previous prime is 20871813199. The next prime is 20871813233. The reversal of 20871813226 is 62231817802.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474359370 + ... + 474359413.

It is an arithmetic number, because the mean of its divisors is an integer number (4269234528).

Almost surely, 2^20871813226 is an apocalyptic number.

20871813226 is a deficient number, since it is larger than the sum of its proper divisors (13282062998).

20871813226 is a wasteful number, since it uses less digits than its factorization.

20871813226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948718796.

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 20871813226 in words is "twenty billion, eight hundred seventy-one million, eight hundred thirteen thousand, two hundred twenty-six".