20444363515655 has 16 divisors (see below), whose sum is σ = 25119752677344. Its totient is φ = 15968800404480.

The previous prime is 20444363515637. The next prime is 20444363515691. The reversal of 20444363515655 is 55651536344402.

It is not a de Polignac number, because 20444363515655 - 2²⁶ = 20444296406791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20444363515597 and 20444363515606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 269997326 + ... + 270073035.

It is an arithmetic number, because the mean of its divisors is an integer number (1569984542334).

Almost surely, 2^{20444363515655} is an apocalyptic number.

20444363515655 is a deficient number, since it is larger than the sum of its proper divisors (4675389161689).

20444363515655 is a wasteful number, since it uses less digits than its factorization.

20444363515655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540070546.

The product of its (nonzero) digits is 25920000, while the sum is 53.

The spelling of 20444363515655 in words is "twenty trillion, four hundred forty-four billion, three hundred sixty-three million, five hundred fifteen thousand, six hundred fifty-five".