11441420447 has 2 divisors, whose sum is σ = 11441420448. Its totient is φ = 11441420446.

The previous prime is 11441420413. The next prime is 11441420477. The reversal of 11441420447 is 74402414411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11441420447 - 2⁶ = 11441420383 is a prime.

It is a super-2 number, since 2×11441420447² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11441420407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5720710223 + 5720710224.

It is an arithmetic number, because the mean of its divisors is an integer number (5720710224).

Almost surely, 2^11441420447 is an apocalyptic number.

11441420447 is a deficient number, since it is larger than the sum of its proper divisors (1).

11441420447 is an equidigital number, since it uses as much as digits as its factorization.

11441420447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14336, while the sum is 32.

Adding to 11441420447 its reverse (74402414411), we get a palindrome (85843834858).

The spelling of 11441420447 in words is "eleven billion, four hundred forty-one million, four hundred twenty thousand, four hundred forty-seven".