21983676068 has 12 divisors (see below), whose sum is σ = 38555618892. Its totient is φ = 10967784960.

The previous prime is 21983676049. The next prime is 21983676137. The reversal of 21983676068 is 86067638912.

It can be written as a sum of positive squares in 2 ways, for example, as 17200847104 + 4782828964 = 131152^2 + 69158^2 .

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, 6011213 + ... + 6014868.

It is an arithmetic number, because the mean of its divisors is an integer number (3212968241).

Almost surely, 2^21983676068 is an apocalyptic number.

It is an amenable number.

21983676068 is a deficient number, since it is larger than the sum of its proper divisors (16571942824).

21983676068 is a wasteful number, since it uses less digits than its factorization.

21983676068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12026542 (or 12026540 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 21983676068 in words is "twenty-one billion, nine hundred eighty-three million, six hundred seventy-six thousand, sixty-eight".