20440420022153 has 2 divisors, whose sum is σ = 20440420022154. Its totient is φ = 20440420022152.

The previous prime is 20440420022149. The next prime is 20440420022227. The reversal of 20440420022153 is 35122002404402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18897130608889 + 1543289413264 = 4347083^2 + 1242292^2 .

It is a cyclic number.

It is not a de Polignac number, because 20440420022153 - 2² = 20440420022149 is a prime.

It is not a weakly prime, because it can be changed into another prime (20440420024153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220210011076 + 10220210011077.

It is an arithmetic number, because the mean of its divisors is an integer number (10220210011077).

Almost surely, 2^{20440420022153} is an apocalyptic number.

It is an amenable number.

20440420022153 is a deficient number, since it is larger than the sum of its proper divisors (1).

20440420022153 is an equidigital number, since it uses as much as digits as its factorization.

20440420022153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 20440420022153 its reverse (35122002404402), we get a palindrome (55562422426555).

The spelling of 20440420022153 in words is "twenty trillion, four hundred forty billion, four hundred twenty million, twenty-two thousand, one hundred fifty-three".