20144522066637 has 32 divisors (see below), whose sum is σ = 27837471398400. Its totient is φ = 12942362972672.

The previous prime is 20144522066629. The next prime is 20144522066639. The reversal of 20144522066637 is 73666022544102.

It is a happy number.

It is not a de Polignac number, because 20144522066637 - 2³ = 20144522066629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144522066639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 614464348 + ... + 614497130.

It is an arithmetic number, because the mean of its divisors is an integer number (869920981200).

Almost surely, 2^{20144522066637} is an apocalyptic number.

It is an amenable number.

20144522066637 is a deficient number, since it is larger than the sum of its proper divisors (7692949331763).

20144522066637 is a wasteful number, since it uses less digits than its factorization.

20144522066637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45797.

The product of its (nonzero) digits is 2903040, while the sum is 48.

The spelling of 20144522066637 in words is "twenty trillion, one hundred forty-four billion, five hundred twenty-two million, sixty-six thousand, six hundred thirty-seven".