21860573226 has 16 divisors (see below), whose sum is σ = 43762058400. Its totient is φ = 7280039088.

The previous prime is 21860573209. The next prime is 21860573227. The reversal of 21860573226 is 62237506812.

It is not an unprimeable number, because it can be changed into a prime (21860573227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1697716 + ... + 1710543.

It is an arithmetic number, because the mean of its divisors is an integer number (2735128650).

Almost surely, 2^21860573226 is an apocalyptic number.

21860573226 is an abundant number, since it is smaller than the sum of its proper divisors (21901485174).

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

21860573226 is a wasteful number, since it uses less digits than its factorization.

21860573226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409333.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 21860573226 in words is "twenty-one billion, eight hundred sixty million, five hundred seventy-three thousand, two hundred twenty-six".