20006742233757 has 32 divisors (see below), whose sum is σ = 29227250736000. Its totient is φ = 12116862076928.

The previous prime is 20006742233717. The next prime is 20006742233759. The reversal of 20006742233757 is 75733224760002.

It is a cyclic number.

It is not a de Polignac number, because 20006742233757 - 2¹¹ = 20006742231709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20006742233759) 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, 3140038 + ... + 7062104.

It is an arithmetic number, because the mean of its divisors is an integer number (913351585500).

Almost surely, 2^{20006742233757} is an apocalyptic number.

It is an amenable number.

20006742233757 is a deficient number, since it is larger than the sum of its proper divisors (9220508502243).

20006742233757 is a wasteful number, since it uses less digits than its factorization.

20006742233757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925565.

The product of its (nonzero) digits is 2963520, while the sum is 48.

Adding to 20006742233757 its reverse (75733224760002), we get a palindrome (95739966993759).

The spelling of 20006742233757 in words is "twenty trillion, six billion, seven hundred forty-two million, two hundred thirty-three thousand, seven hundred fifty-seven".