21966522026 has 8 divisors (see below), whose sum is σ = 33087648960. Its totient is φ = 10937305708.

The previous prime is 21966521999. The next prime is 21966522037. The reversal of 21966522026 is 62022566912.

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

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 3 ways as a sum of consecutive naturals, for example, 22977056 + ... + 22978011.

It is an arithmetic number, because the mean of its divisors is an integer number (4135956120).

Almost surely, 2^21966522026 is an apocalyptic number.

21966522026 is a deficient number, since it is larger than the sum of its proper divisors (11121126934).

21966522026 is a wasteful number, since it uses less digits than its factorization.

21966522026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45955308.

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 21966522026 in words is "twenty-one billion, nine hundred sixty-six million, five hundred twenty-two thousand, twenty-six".