21819222762 has 16 divisors (see below), whose sum is σ = 43770287712. Its totient is φ = 7251100560.

The previous prime is 21819222743. The next prime is 21819222779. The reversal of 21819222762 is 26722291812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5491273 + ... + 5495244.

It is an arithmetic number, because the mean of its divisors is an integer number (2735642982).

Almost surely, 2^21819222762 is an apocalyptic number.

21819222762 is an abundant number, since it is smaller than the sum of its proper divisors (21951064950).

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

21819222762 is a wasteful number, since it uses less digits than its factorization.

21819222762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10986853.

The product of its digits is 96768, while the sum is 42.

The spelling of 21819222762 in words is "twenty-one billion, eight hundred nineteen million, two hundred twenty-two thousand, seven hundred sixty-two".