20400221644014 has 16 divisors (see below), whose sum is σ = 40800600478080. Its totient is φ = 6800047683000.

The previous prime is 20400221644003. The next prime is 20400221644021. The reversal of 20400221644014 is 41044612200402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4827612 + ... + 8006639.

It is an arithmetic number, because the mean of its divisors is an integer number (2550037529880).

Almost surely, 2^{20400221644014} is an apocalyptic number.

20400221644014 is an abundant number, since it is smaller than the sum of its proper divisors (20400378834066).

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

20400221644014 is a wasteful number, since it uses less digits than its factorization.

20400221644014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13099175.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 20400221644014 its reverse (41044612200402), we get a palindrome (61444833844416).

The spelling of 20400221644014 in words is "twenty trillion, four hundred billion, two hundred twenty-one million, six hundred forty-four thousand, fourteen".