20013244230761 has 16 divisors (see below), whose sum is σ = 21454526116800. Its totient is φ = 18601483918848.

The previous prime is 20013244230743. The next prime is 20013244230821. The reversal of 20013244230761 is 16703244231002.

It is a cyclic number.

It is not a de Polignac number, because 20013244230761 - 2¹⁸ = 20013243968617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013244230061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 585605 + ... + 6353693.

It is an arithmetic number, because the mean of its divisors is an integer number (1340907882300).

Almost surely, 2^{20013244230761} is an apocalyptic number.

It is an amenable number.

20013244230761 is a deficient number, since it is larger than the sum of its proper divisors (1441281886039).

20013244230761 is a wasteful number, since it uses less digits than its factorization.

20013244230761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770648.

The product of its (nonzero) digits is 48384, while the sum is 35.

Adding to 20013244230761 its reverse (16703244231002), we get a palindrome (36716488461763).

The spelling of 20013244230761 in words is "twenty trillion, thirteen billion, two hundred forty-four million, two hundred thirty thousand, seven hundred sixty-one".