21842883568964 has 6 divisors (see below), whose sum is σ = 38225046245694. Its totient is φ = 10921441784480.

The previous prime is 21842883568931. The next prime is 21842883568967. The reversal of 21842883568964 is 46986538824812.

It can be written as a sum of positive squares in only one way, i.e., 17243754553600 + 4599129015364 = 4152560^2 + 2144558^2 .

It is a super-2 number, since 2×21842883568964² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21842883568891 and 21842883568900.

It is not an unprimeable number, because it can be changed into a prime (21842883568967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2730360446117 + ... + 2730360446124.

It is an arithmetic number, because the mean of its divisors is an integer number (6370841040949).

Almost surely, 2^{21842883568964} is an apocalyptic number.

It is an amenable number.

21842883568964 is a deficient number, since it is larger than the sum of its proper divisors (16382162676730).

21842883568964 is a wasteful number, since it uses less digits than its factorization.

21842883568964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460720892245 (or 5460720892243 counting only the distinct ones).

The product of its digits is 1274019840, while the sum is 74.

The spelling of 21842883568964 in words is "twenty-one trillion, eight hundred forty-two billion, eight hundred eighty-three million, five hundred sixty-eight thousand, nine hundred sixty-four".