20440047765753 has 60 divisors (see below), whose sum is σ = 38356632973120. Its totient is φ = 10618206595920.

The previous prime is 20440047765727. The next prime is 20440047765803. The reversal of 20440047765753 is 35756774004402.

20440047765753 is a `hidden beast` number, since 2 + 0 + 4 + 40 + 0 + 477 + 65 + 75 + 3 = 666.

It is not a de Polignac number, because 20440047765753 - 2¹⁶ = 20440047700217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20440047765753.

It is not an unprimeable number, because it can be changed into a prime (20440047765653) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 148896133 + ... + 149033346.

Almost surely, 2^{20440047765753} is an apocalyptic number.

It is an amenable number.

20440047765753 is a deficient number, since it is larger than the sum of its proper divisors (17916585207367).

20440047765753 is a wasteful number, since it uses less digits than its factorization.

20440047765753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297929520 (or 297929500 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 54.

The spelling of 20440047765753 in words is "twenty trillion, four hundred forty billion, forty-seven million, seven hundred sixty-five thousand, seven hundred fifty-three".