21944080634 has 8 divisors (see below), whose sum is σ = 37618423968. Its totient is φ = 9404605980.

The previous prime is 21944080559. The next prime is 21944080679. The reversal of 21944080634 is 43608044912.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21944080591 and 21944080600.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783717152 + ... + 783717179.

It is an arithmetic number, because the mean of its divisors is an integer number (4702302996).

Almost surely, 2^21944080634 is an apocalyptic number.

21944080634 is a deficient number, since it is larger than the sum of its proper divisors (15674343334).

21944080634 is a wasteful number, since it uses less digits than its factorization.

21944080634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567434340.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 21944080634 in words is "twenty-one billion, nine hundred forty-four million, eighty thousand, six hundred thirty-four".