20440013002153 has 16 divisors (see below), whose sum is σ = 22399414943760. Its totient is φ = 18565365145600.

The previous prime is 20440013002147. The next prime is 20440013002177. The reversal of 20440013002153 is 35120031004402.

It can be written as a sum of positive squares in 8 ways, for example, as 62841966489 + 20377171035664 = 250683^2 + 4514108^2 .

It is a cyclic number.

It is not a de Polignac number, because 20440013002153 - 2¹⁷ = 20440012871081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20440013002553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8935738 + ... + 10987603.

It is an arithmetic number, because the mean of its divisors is an integer number (1399963433985).

Almost surely, 2^{20440013002153} is an apocalyptic number.

It is an amenable number.

20440013002153 is a deficient number, since it is larger than the sum of its proper divisors (1959401941607).

20440013002153 is a wasteful number, since it uses less digits than its factorization.

20440013002153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19925468.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20440013002153 its reverse (35120031004402), we get a palindrome (55560044006555).

The spelling of 20440013002153 in words is "twenty trillion, four hundred forty billion, thirteen million, two thousand, one hundred fifty-three".