20042204444447 has 2 divisors, whose sum is σ = 20042204444448. Its totient is φ = 20042204444446.

The previous prime is 20042204444399. The next prime is 20042204444513. The reversal of 20042204444447 is 74444440224002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20042204444447 - 2¹² = 20042204440351 is a prime.

It is a super-2 number, since 2×20042204444447² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20042204441447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021102222223 + 10021102222224.

It is an arithmetic number, because the mean of its divisors is an integer number (10021102222224).

Almost surely, 2^{20042204444447} is an apocalyptic number.

20042204444447 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042204444447 is an equidigital number, since it uses as much as digits as its factorization.

20042204444447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 917504, while the sum is 41.

Adding to 20042204444447 its reverse (74444440224002), we get a palindrome (94486644668449).

The spelling of 20042204444447 in words is "twenty trillion, forty-two billion, two hundred four million, four hundred forty-four thousand, four hundred forty-seven".